

You buy a game in Steam, you can’t play it without Steam
That’s not true though. For many games, after you installed it you can even uninstall Steam or copy/backup the game to another computer without Steam and play it forever. Yes, many games have DRM that will prevent you from doing that, but that’s the game developers doing. Steam does not have any DRM by itself, nor does it require to be running or even installed to run games you originally got from it.
Again, unless the game developer went out of their way to add DRM.











I am aware they offer a feature. It is up to the game developer to implement it though if they choose to, Steam does not force DRM onto anyone.