I still like Harry Potter and don't blame people for still enjoying it, it's just too bad the writer sucks ass. Imo if you wanna still play Harry Potter games, or watch the movies, go pirate them. You get to enjoy the series without giving the writer money. Win-win imo.
Library books aren't free. They are paid for by the library and the author gets a payment per lend (called Public Lending Rights). Not sure how it works for games, but I would be shocked if it's not a similar system.