Why should the developer have to compete against their own good-as-new product? Its different because the devs/pubs believe they can enforce a difference enough of the time. Basically, they're going to get you one way or the other. If you only buy second hand then soon you'll either have a very limited choice of game selection and problems with scammers selling their game and repossessing the online account, or they'll sell half the game as DLC. Its not like games aren't dirt cheap already if you just have the patience to wait a year!