History Main / StartMyOwn

* Four out of six members of the original lineup of Swedish {{Horrible History|Metal}} PowerMetal band Music/{{Sabaton}} left to form the very similar[[note]]still mostly military history themed music, but MetalScream vocals instead of a basso growl[[/note]] Music/CivilWar after recording ''Carolus Rex'' in 2012, citing fatigue with Sabaton's touring schedule and a desire to have more of a role in songwriting. Sabaton frontman Joakim Brodén says they're still friends but admits things were tense at the time.

** In the ''WebAnimation/HomestarRunner'' game "Strong Badia the Free", Strong Bad gets everybody to secede from the King of Town's domain. He thinks everybody is going to join the now-autonomous Strong Badia, but instead they all go off and create their own countries. The rest of the game is him trying to convince everyone to band together to overthrow the King.

-->''"[[http://www.homestarrunner.com/ccdo7.html Kitchen Commandos, a really bad idea! It closed down after three months!]]"''

** A unique case: The creators of LXDE, another GNOME 2 clone that focuses on being lightweight, decided to switch from the ageing and depreciated GTK2 [[https://en.wikipedia.org/wiki/Widget_toolkit widget toolkit]] to a newr one called[=Qt=] and forked themselves into [=LXQt=]. Work was stopped on LXDE proper and the project was officially abandoned, and users were advised to switch over to the new project. Not everyone was okay with this, as [=Qt=] uses a lot more system resources; not enough to be a problem on the majority of modern hardware, but an issue for devteams who create ultra-lightweight Linux distros designed to keep exceptionally old and underpowered PCs usable. Some of those devs assumed control of the original project and recommenced development using the newer GTK3 library, and now LXDE and [=LXQt=] are two separate projects, with the latter becoming an officially recognized fork of the former.

** Another heated one with the GNOME desktop project. When it was revealed that GNOME 3 was going to take a page out of Windows 8's book by doing away with a start button metaphor for a start screen metaphor designed for both desktops and tablets, a subset of the developers were understandably miffed as Microsoft's design was universally ''reviled''. This led to two forks- ''MATE'', which forks GNOME 2 with the intention of keeping the immediate interface but keeping the underlying libraries upgraded to the latest, and ''Cinnamon'', which takes GNOME 3 but deletes the undesirable features while porting desired features from GNOME 2 back into it. [[AuthorsSavingThrow The developers of GNOME eventually gave in and created an official GNOME 2 mode for the desktop environment]], called ''GNOME Flashback''.

** A unique case: When LXDE, another GNOME 2 clone that focuses on being lightweight, decided to switch from GTK to [=Qt=] and forked themselves into [=LXQt=], the original LXDE project was abandoned and left to die. Someone[[note]]It's no secret that [=Qt=] is a memory hog, but the original developers think it was fine as older hardware is abandoned, angering some retrocomputing circles who're using specially crafted versions of Linux that uses very little resources to keep older hardware usable[[/note]] assumed control of the original project sometime while the project is dying and nursed it back to health, and now LXDE and [=LXQt=] are two separate projects, with the latter becoming an officially recognized fork of the former.

** Z, the BigBad of ''Manga/OnePiece Film Z'' was once a member of the Navy, but got so fed up with their corruption that he left and formed his own private army. Problem? His methods are too extreme for even Admiral ''[[GeneralRipper Sakazuki]]''.

* This was essentially what led to the creation of the [[http://en.wikipedia.org/wiki/Dassault_Rafale Dassault Rafale]] - France was originally collaborating with the UK, Germany, Italy and Spain on the [[RealLife/CoolPlane Eurofighter project]], but they wanted to make a carrier-capable version; when it became clear that none of the other countries wanted to bother with one, France withdrew to pursue their own project. Similar to many other examples of this trope, the Rafale actually entered service before the Eurofighter.

* ''Franchise/FireEmblem'' creator Shouzou Kaga left Creator/IntelligentSystems shortly after the release of ''VideoGame/FireEmblemThracia776'' for still undisclosed reasons [[note]]Theories abounds: some says Kaga left over disagreements regarding the direction the games were going, other says he was actually fired over the rather mercurial development of ''Thracia776'' along with Kaga's bullheaded refusal to modernize the series to appeal to modern audiences.[[/note]]. Kaga went and formed Tirnanog studios, eventually released ''VideoGame/TearRingSaga'' for the Playstation. The game turned to be such a [[SerialNumbersFiledOff blatant Fire Emblem ripoff]] that Nintendo took both Tirnanog and game publisher Enterbrain to court. Things were settled out of court and all those involve [[OldShame would rather not talk about it ever again]].

* In 2015, Creator/{{Tencent|Games}} acquired Riot Games and requested them to make a mobile port of their global smash hit, ''VideoGame/LeagueOfLegends''. Riot at the time declined, considering ''League'' to be too sophisticated of a game to try and simplify for a smartphone's interface, which Tencent then responded with "very well, then we'll try making a mobile [[MultiplayerOnlineBattleArena MOBA]] ourselves." The end result was ''Honor of Kings'' (adapted internationally as ''VideoGame/ArenaOfValor'')[[note]]Initially it was more of [[SerialNumbersFiledOff a direct knockoff]] of ''League'' called ''League of Kings'', [[{{Irony}} but after receiving enough complaints from Riot as being borderline plagiarism]], Tencent took additional time for significant {{retool}}ing to form its own identity[[/note]], which then became an enormous smash hit in its own right, becoming the most popular mobile property in their native China by the end of the decade. [[{{Irony}} Ironically]], its powerhouse success [[AndYouThoughtItWouldFail convinced Riot to reconsider their stance on mobile MOBAs]], leading to their mobile port of ''League'' being developed and released in late 2019 (Tencent would temporarily halt their plans of marketing ''Arena of Valor'' in western regions to allow Riot to make their announcements, so it seems there are no hard feelings in the matter).

** A unique case: When LXDE, another GNOME 2 clone that focuses on being lightweight, decided to switch from GTK to Qt and forked themselves into LXQt, the original LXDE project was abandoned and left to die. Someone[[note]]It's no secret that Qt is a memory hog, but the original developers think it was fine as older hardware is abandoned, angering some retrocomputing circles who're using specially crafted versions of Linux that uses very little resources to keep older hardware usable[[/note]] assumed control of the original project sometime while the project is dying and nursed it back to health, and now LXDE and LXQt are two separate projects, with the latter becoming an officially recognized fork of the former.
* Microsoft created the [=C#=] programming language, which is similar to Java in many ways, after Sun Microsystems refused grant them a license to create a customized version of Java to bundle with Windows, fearing that it would be subject to Microsoft's [[https://en.wikipedia.org/wiki/Embrace,_extend,_and_extinguish "extend, embrace, extinguish"]] strategy.

* After UsefulNotes/SteveJobs was KickedUpstairs at Apple due to his stubborn personality rendering him unable to get along with anyone else in the company, he decided to quit and form a new computer company, called [=NeXT=]. [=NeXT=] was basically made up of every stereotype about Apple turned UpToEleven. Its products generated a lot of buzz for their ease-of-use, technical sophistication, and striking aesthetic designs, but they were also [[CrackIsCheaper ludicrously expensive]] and [[NoBackwardsCompatibilityInTheFuture not compatible with any existing products]] [[note]]Bill Gates famously quipped "[=NeXT=] has an interesting feature called incompatibility"[[/note]]. This came at a time when the industry was rapidly embracing the standards set by the UsefulNotes/IBMPersonalComputer, which also had the effect of driving costs down, leading to poor sales of [=NeXT=]'s computers. Ironically, [=NeXT's=] legacy would be salvaged when Apple purchased them in 1997 in order to use their [=NeXTSTEP=] operating system as the basis for what became Mac OS X, bringing Jobs back to Apple in the process. Though at first he only held the position of "advisor", he quickly rose to the position of CEO, which he held until shortly before his death in 2011.

* Microsoft created the [=C#=] programming language, which is similar to Java in many ways, after Sun Microsystems refused to allow them to create a custom version of Java to bundle with Windows, fearing that it would subject Java to Microsoft's [[https://en.wikipedia.org/wiki/Embrace,_extend,_and_extinguish "extend, embrace, extinguish"]] strategy.

* In 2018, the founder of for Nuclear Blast Records, Markus Staiger departed from the label following the label's acquisition by Believe digital. The split resulted in Staiger founding the label Atomic Fire Records in 2021 while transfering roughly a dozen bands from his former label over to the new label. Additional bands have since been signed such as [=U.D.O.=], [=Power Paladin=], [=Skull Fist=] and [=Mystic Circle=].

* A mock episode of ''WesternAnimation/{{Birdman}}'' retconned Murko the Marauder as a F.E.A.R. agent leaving to start his own criminal organization.

* In the present setting of ''Literature/TheWheelOfTime'', the Aiel are a race of feared and powerful warriors, expert in violence and hardened with honor. The [[spoiler:original]] Aiel were a group of [[spoiler:magically-inclined servants of the Aes Sedai sworn to non-violence.]] Eventually, years of living as constantly harassed nomadic [[spoiler:pacifists]] drove four of their number to [[spoiler:commit AccidentalMurder]] to rescue their sisters from being enslaved by brigands. Their elders exiled the survivors of that mission, but their leader still insisted that in spite of unintentionally violating one of their most sacred oaths, that he and his companions were "still Aiel." The group, continuing to refer to proclaim themselves as Aiel, attracted more and more people from their original tribe to join them, as the prospect of being allowed to [[spoiler:protect themselves]] was an appealing alternative to being killed, kidnapped, eaten, or raped. Eventually, their numbers got to the point that the "exiles" could sustain communities of their own while their progenitors continued to dwindle in number. In addition, their growing reputation as fierce fighters, determined hunters, and eerie assassins gave these new Aiel [[WeirdAlEffect a much grander reputation than the originals]], eclipsing their forefathers entirely as "the" Aiel. To their credit, these successors never stopped trying to look out for those that cast them out, helping them when asked until [[spoiler:they went extinct]] and maintaining peaceful relations with a similar splinter group: the [[spoiler:Tuatha'an aka "The Tinkerers"]].

* Also, [[TheWikiRule Wikis]]. Many are started because they have focused subject matter, but many others are founded because Wiki/{{Wikipedia}}'s standards of notability and citation somehow exclude them, or they think there's something biased about it. For instance, Conservapedia was created by a group who decried Wikipedia's "evidence" and "objectivity", and made their own online encyclopedia with their ''own'' bias. [[Wiki/TVTropes This very wiki]] specializes in covering the tropes of popular culture. Since Wikia allows anyone that wants to start a Wiki to do so, this happens quite often with those who don't like the guidelines, procedures, etc., etc. of a particular wiki. It often doesn't end well, since most of these people are neither suited to be admins nor have the ability to gather followers to their new wiki. One of the most prominent examples (and far more successful than most) is the ''StarWars'' fandom's [[PunBasedTitle Wookieepedia]], which came about when Wikipedia purged a great many ''Star Wars'' articles as "non-notable". Copies of the purged articles were part of the core of Wookieepedia in its early days. Now Wookieepedia is the 5th-largest Wiki in existence.

* The Creator/{{Sony}} UsefulNotes/PlayStation began life as a CD add-on for Creator/{{Nintendo}}'s [[UsefulNotes/SuperNintendoEntertainmentSystem Super NES]] console. However, when Nintendo backed out of their contract with Sony during development[[note]]because a buried clause would have given Sony perpetual rights to Nintendo's games[[/note]] and instead contracted with Philips for the add-on (which never materialized[[note]]but did spawn the infamous ''VideoGame/TheLegendOfZeldaCDiGames[[/note]]''), and dumped Sony in the most dickish way imaginable to Japanese businessmen (news of the change was withheld from Sony until the day of the CES, and then announced in front of an audience)[[note]]UsefulNotes/{{SNESCDROM}}[[/note]], Sony turned to Sega... only to be laughed at by the Sega execs, who claims that Sony knows nothing about the video games industry. This resulted in them turning the peripheral into a stand-alone console and entered the game market themselves, determined to teach Nintendo and Sega a lesson...which they did, displacing Nintendo's position at the top of the game industry with the UsefulNotes/PlayStation while contributing to the death of Sega's hardware business, and then retaining their stranglehold on the market with the UsefulNotes/PlayStation2, forcing Nintendo to [[TakeAThirdOption re-think gaming entirely]] in order to get back on top with the UsefulNotes/{{Wii}}. To be fair however, Sony's hands aren't clean in this. Sony had inserted a buried clause that would have resulted in Sony getting a very significant portion of the profits from all sales and complete control over licensing. Nintendo's CEO at the time, Hiroshi Yamauchi, was furious when he found the clause and thought it was a great insult, and decided to fight fire with fire by humiliating Sony in public in return, which in hindsight turned out to be a bad idea.

** Mormon Fundamentalists are what happens when, deciding mainstream Mormons were wrong to abandon polygamy, hardcore religious nuts start their own. This came about, mind you, after Joseph Smith did the same thing to Christianity. (Although UsefulNotes/{{Mormon|ism}}s would disagree with labeling their church as reformed.)

* Creator/MasiOka decided he wanted to break into the game industry, since he enjoyed playing games and wanted to make some, but the studios he approached with his ideas turned him down. So, he asked a bunch of college kids about to graduate if they wanted to come work for him,[[note]]One imagines their response was somewhere along the lines of, [[SarcasmMode "Is the sky blue?"]][[/note]] and that's how Creator/MobiusDigital got started.

* One ''Manga/DetectiveConan'' episode, "Computer Murder Case," involves a TearJerker failed example: [[spoiler:The SympatheticMurderer once worked for the AssholeVictim CorruptCorporateExecutive before eventually invoking this with a friend. Sadly, their new business was soon ruined by the victim, which also drove the friend to suicide. And to add insult to injury, the murderer then had no choice but to return to working for the victim, this time in a much-lower position -- all while having to endure the latter's SpeakIllOfTheDead taunts about the friend, on top of it. Understandably, the murderer finally snapped and decided to avenge his friend.]]

** Creator/VinDiesel was so tired of [[TheTroubleWithLicensedGames crappy licensed games based on his movies]] that he formed his own company, Tigon. Their first release was ''[[VideoGame/EscapeFromButcherBay Chronicles Of Riddick: Escape From Butcher Bay]]'', which most consider ''better'' than the movie it's licensed from.

* In 2015, Joel Hodgson launched a successful Website/{{Kickstarter}} campaign to resurrect ''Series/MysteryScienceTheater3000'' and sold the rights to air the new seasons on Creator/{{Netflix}}. When Netflix declined to make a third season and the COVID-19 pandemic hit, Joel decided to go back to Kickstarter to not only resurrect the series again, but make ''his own'' streaming service, inspired by the change in filmaking the pandemic pushed.

* After getting fired from Gamespot for undisclosed reasons (though the most popular is for giving a mediocre review to ''VideoGame/KaneAndLynch: Dead Men'' while the game was advertised on the site), Jeff Gerstmann went off to start the gaming news site Website/GiantBomb alongside other former Gamespot journalists. Ironically, they would end up becoming a sister site to Gamespot when Giant Bomb got purchased by then Gamespot's parent company, [=ViacomCBS=]

* The video game ''Jawbreaker'' was a case of this. It started out as a near-perfect port of ''VideoGame/PacMan'' for the UsefulNotes/Atari8BitComputers done by [[Creator/{{Sierra}} On-Line Systems]]. However once [[Creator/{{Atari}} Atari]] caught wind of it, rather than do the decent thing and license the program, they attempted to bully the programmer into giving them the game. As a result, ''Jawbreaker'' was released as its own game.

* Creator/{{Natsume}} were the people that translated Marvelous main franchise, Bokujō Monogatari, under the name ''VideoGame/HarvestMoon''. However, Marvelous dropped Natsume and went with another company, Creator/XSEEDGames. However, since Natsume owns the rights to the Harvest Moon name, they decided to make their own and keep the series going. Bokujō Monogatari is now released under the name ''VideoGame/StoryOfSeasons''.

* After getting fired from Gamespot for undisclosed reasons (though the most popular is for giving a mediocre review to ''VideoGame/KaneAndLynch: Dead Men'' while the game was advertised on the site), Jeff Gerstmann went off to start the gaming news site Website/GiantBomb alongside other former Gamespot journalists.