I see people saying we will be able to stream Steam games, but how so? And if true, I wonder what that would mean for some of Sony's games on Steam. Something tells me Sony will have that blocked, unfortunately.
As mentioned above - GFNow supports its own subset of games (not unlike GP) - if you own games from
that list on 'any' supported store, they will play, but nothing else will. Currently there are no Sony games on the service, so there's nothing to block.
Like with any other services - publishers have to give their explicit approval for these - NVidia isn't the one calling the shots.
Also before you ask - in some form this list would likely exist even if publishers greenlit all the games - NVidia has to pre-package the install-packages for hot-start - it's not like they simply have a preinstalled library of 2000 games for every service sitting inside every cloud PC.
Maybe it was my settings, who knows, but I certainly couldn't play games using Moonlight seamlessly like others claim to.
I never tried Moonlight but Steam-link worked a lot worse than GFNow for me. Also for the subscription fee you get a GPU instance of certain spec - the 25$ for the highest tier buys a 4080 equipped PC, which really does perform like one (connection permitting you get the full 4k HDR experience at up to 120hz). This is a rather big difference to most other streaming solutions and/or performance (I have to admit GFNow tends to be quite stable - way better than my experience was on Stadia on comparable network, and similar to PSNow/XCloud but those run at 1/4 the resolution and often 1/2 the framerate).