Sony made arguments that people can't expect to own the game, even with BUY because they don't have Copyright to it, as in the actual right to change and duplicate it.
I think most reasonable people think they will own the game in all perpetuity or at least there will never be a time where they can't play the game, maybe they'll give up on it and later it will be abandoned that way but not that someone will just switch it off once purchased. If a digital copy, at least if you keep your console with the copy downloaded on it, it will play until the console dies, even if the store switches off in 10 years or 50 years. Of course we know that 99% of people move on and never really return to these games from 10 years or more ago. New stuff appears or their lives change etc.
