I don’t think that comparison tracks. If you’re a heavy gamer and the platform doesn’t allow you to play a lot of your favorite games, I wouldn’t recommend it as a platform. Xbox doesn’t get everything but it does get about 95% of all the titles you are looking for that aren’t platform exclusive to Sony or Nintendo. A decade ago linux could only play a much smaller fraction of the games you could play on windows. What your percentage of viable vs non-viable is, is up to you but I’d wager for many heavy gamers that percentage was much too low then.