A lot of Steam games are also DRM free. It's up to the individual developers whether they enforce DRM checks or not.
I've copied files from Steam folders directly to a flash drive, plugged them into an offline, Steam-less computer that I don't have rights to install anything on, and ran them perfectly. But it is a game-by-game thing.
No one thinks Gaben is the second coming. His platform just, actually doesn't suck, and genuinely functions as a service to its users. It's a low bar, sure, but it's a good one. Comparing it to Microsoft axeing any studio that produces something worth talking about while they force more datascraping malware and adware into Windows is just dishonest.
Your comment reads more like you get off on being controversial than having actual insightful thoughts and the comparisons in what these three companies you listed are actually doing.