Geforce Now library kinda sucks to me, not all that much better than Stadia but that's my opinion. Stadia has a few names (e.g. Red Dead Redemption) that GFN doesn't and vice versa.
I think it's ridiculous that a publisher can prevent me from using my license on what is essentially rented cloud hardware. IP laws have come to stifle the very innovation they were supposed to protect.
I'm still not over the fact we are all buying licences instead of copies.
Now they smell money and opportunity to fleece a bigger company for higher fees. It happens all the time, unfortunately.
That‘s why it‘s pretty disappointing that stadia killed their first party studios. You have to produce your own content (like netflix) or at least partner with publishers to be exclusive or simple. This seems to be happening with Ubisoft.
But MS just has such a massive advantage with Gamepass.
Shadow does offer Windows VM‘s. It works pretty well, but it‘s also quite expensive and not really generally available.