The sports games make more sense with the “forever brand” model IMO. They have more replayability, and with multi player if your friends upgrade, you have to too.

Assassins Creed is a single player, story based game. Once you’ve played it, most people don’t play it again. It has a lot of potential for new games because you can always change the time/location combination but I imagine designing huge maps is more expensive than updating rosters.