[wongarsu]

> Other developers can just make their own platform or distribute games themselves individually. Nobody wants to do that for obvious reasons

Where "nobody" is specifically "no users". Lots of publishers tried doing exactly that, and most eventually gave up because users don't want to deal with extra launchers or platforms. Offering games on your own distribution channel is fine, but not being on Steam is going to hurt your sales a lot. Epic is really the only still-running attempt (except for GOG)