I assume the difference (to Apple) is that movies generally don't have varied accounts and in-app purchases. You can't buy MTX to reskin the Avengers in Endgame

I assume the difference (to Apple) is that movies generally don't have varied accounts and in-app purchases. You can't buy MTX to reskin the Avengers in Endgame (yet) or unlock extra DLC chapters (well Disney+ is trying I'm sure). You log into one provider (Netflix) instead of potentially an account/provider per game, plus the streaming app. So, money.