Are you a bot? The value they provide has only increased over time. Do you even know what proton is? They rebooutionized Linux gaming and made it open source. Steam input is a godsend, both for developers and players, and I speak as someone who's both. The steam workshop and community market make it easier than ever to add mod support to your games (and to mod your games, from a player's perspective. Just compare modding The Binding of Isaac before vs after the Repentance DLC), and to have marketplace for in-game items, respectively. That's without mentioning the sheer reach that the steam store gives your games.
They've always been the most pro-consumer company in all of gaming. They're still the only company who still gives full, first-class modding and community server support for their multiplayer games. Not a SINGLE other company does that, and as a player, I highly appreciate that. It's the only thing that keeps me from getting too mad about the way Valve has been treating TF2 in the last decade. Other companies (including Epic!) just let their games become lost media.
They're the biggest for a reason. Players choose them, and developers choose them. I have tons of free games on Epic. I even bought some games on there. But I just never play them. Logging in is a hassle, the app is slow, and it's just not as smooth, especially on Linux. Epic never gave a fuck about me. Valve helped me at times I thought no company possibly would. I managed to refund a game weeks after the deadline, because a Valve employee noticed I hadn't actually played the game until nearly a month after purchase, and they let me get my money back. Would Epic do that? I doubt it.
The PlayStation comment is just so uneducated and ignorant it's not even funny. I won't even take the time to argue with that