Earlier quoted context omitted.
> and nothing would stop you playing it Not true for PS5 games. Sony can push a firmware update to disable games, even if you own the disc.
Is there any evidence of this? They can delist a game from the PS store, but I doubt they would make a game unplayable if it's already installed or if you own it physically.
But they do require certain firmware updates to play games, at least they did in the PS3 days. If you hadn't updated to that firmware (say, because you didn't want certain features you used like the OtherOS installation to be deleted) your new physical media would not play. I bought Dark Souls on a disc and could not play it on my console.