/vr/ - Retro Games

In 2021 alone, the source code for the following pre-2005 Western video games was leaked to the public:
>2 on 2 Open Ice Challenge (1995, Midway Games)
>Cruis'n USA (1994, Midway)
>Defender (1981, Williams Electronics).
>Eye of the Beholder II: The Legend of Darkmoon (1991, Westwood Associates)
>Hulk (2003, Radical Entertainment)
>Joust (1982, Williams)
>Kelly Slater's Pro Surfer (2002, Treyarch)
>Mad Planets (1983, Gottlieb)
>Narc (1988, Williams)
>NBA Jam (1993, Midway)
>NBA Jam: Tournament Edition (1995, Midway)
>Oni (2001, Bungie West)
>Outlaw Golf (2002, Hypnotix)
>Revolution X (1994, Midway)
>Robotron: 2084 (1982, Vid Kidz)
>The Simpsons: Hit & Run (2003, Radical)
>Sinistar (1983, Williams)
>Smash TV (1990, Williams)
>Stargate (1981, Vid Kidz)
>Total Carnage (1992, Midway)
>Trog (1990, Bally/Midway)
>WWF WrestleMania: The Arcade Game (1995, Midway)

And for non-Nintendo Japanese games:
>...

Why does Japan suck so much at preservation? There was free version control software since the 1990s.