So I’m talking about playing previously Windows-only games on Linux, e.g. via proton.
I don’t know about the libraries etc that are used - is it possible for Microsoft to use some legal voodoo, for example, to suddenly end it all, and make the use of their libraries illegal (if they belong to Microsoft in the first place)?
Or could there be other ways of interference?
That Windows store never worked for me. I tried to buy something out of perceived convenience once, and tried to install some freeware once or twice (7zip and something else), and it never worked. On a genuine, activated Windows, that is. Never bothered to try again.