Nobody mentioned it, so it’s either really obscure or way too obvious, but: Nirvana (1997).

A game developer finds out that the main character in his next title has become sentient and must save him from endless suffering by deleting all copies of the game shortly before it launches. I saw it many years ago, and really liked it. It hasn’t aged perfectly, but all the important cyberpunk bits are there.

It is not different from how the previous shared libraries worked. I guess it’s there to stop cheaters from buying a single copy of the game and sharing it with throwaway accounts.