Maybe it's just the old gamer in me coming out, but I think there are some very playable Atari games (River Raid, Vanguard, Berserk, Yar's Revenge, just to name a few). Granted, they are very dated and simplistic compared to modern games, but I think that is part of their charm.
But when you're talking about modern gamers (whether they are video game or TTRPGs), look at how dated the approach is. To a modern reader, the layout and art look terrible and dated. This isn't even taking into account the poor organization of rules, game mechanics like THAC0 or attack matrices. You don't see live streamers like Critical Role breaking out 1st edition (at least, I don't think so). There's not a push to get OSE games or organized play going in stores, and unless you're going to GaryCon or other convention dedicated to classic games, you're not going to see a lot of out-of-print games being run (or even retroclones).