It seems to me that game developers have been trying to get out of the idea of games as products and move it more towards a service model. That's what MMO, DLC and Multiplayer has been all about. I imagine that in the next gen, these games will come with a EULA that declares that when we buy a game, we are merely purchasing a license to play and not the actual product itself. This will be the rationale for them cutting themselves into the used game market. SIM CITY actually went as far as to state that you bought the product "as is" and this is why they legally didn't have to give anyone refunds when that piece of shit didn't work for weeks.