I recall telling people at the time "if you want to know what playing a game over Stadia will be like, use OBS to stream a game playing on one computer to another computer in the same room; and play the game by watching the stream. Because ultimately Stadia is a highly optimized version of that, except the computer the game is playing on is in a datacenter somewhere"

But of course even if you own a game you still may not "own" it, if it depends on activation servers and online services to play it.