I'm honestly at a loss as to why they are so popular. I barely remember the last time I enjoyed a AAA game. The only notable exceptions would probably be Baldur’s Gate 3 and Dishonored, which both work. Personally I haven't run into any games that wouldn't work and as much as I'd love to dismiss those (fucking atrocious) games, I get your point about it preventing popular adoption. Sadly it's not something Linux can easily fix, as long as companies insist on using windows specific versions of anti cheat software (despite Linux versions of the same stuff existing) just so they can have kernel access to your machine.