Well that's not exactly true if a game gets delisted so you can'꧒t buyܫ it anymore you can still download and play that game as long as the psn still up and running.

That said if they decide to shut the servers down then you can loose that game. But to be fair look at the ps3 servers and how long they are running for. They are still up now despite threats to take them down. All the time there is an interest in the game🌜 then they stay up and running. I guess your affectively renting a digital game long term. But it would take a lot of disinterest for them to shut it down.