I think it's driven more about piracy than anything else. Steam is not an alternative if you hate digital only games. PC as a platform (and that can mean anything from Windows to Linux to Mac) is an alternative as cheaper gaming becasue 1, you can pirate games easier 2, you can emulate older games.

It really comes down to the next PS6 exclusive, would people buy a console just to play Dark Souls 4? That's the billion dollar question