CD Projekt RED Mocks DRM in The Witcher 3

[Darknacht]

They don't have a whole lot, though. And most just get 'brought up to working' not 'brought up to date.'
They're a bit barebones.

https://en.wikipedia.org/wiki/Epic_Games
Even just using this list from one company, it's missing a lot.

https://www.youtube.com/watch?v=IrTz2SpsIXA
Fire Fight for example. Saving doesn't work on modern systems. Radix tends to have the same problem depending on directory structure.

Who owns the IP on many old games is so unclear, even to those that may own them, that many companies just don't care to have their old games sold. And the rights to some games are owned by 3-5 different companies making it essentially impossible for anyone to work out a deal to sell the games even if you could find out who all owned the game. Because of this many old games will never be sold digitally no matter who is wanting to sell them.
Also what exactly do you mean by up to date?