Some people are asking themselves: is this a good development or a bad one? (Yes some people are ignorant enough for such questions. You don't believe me? Go see TheGamerAccess on youtube about this topic)
There is no reasonable argument for prohibiting used games. In fact, a more thought out question is: is it legal to do so? Isn't it against my right to sell things to others?
We live in a time where you have to fill in registration codes in order to play the full game, which of course can only be used once. Once used, this reduces the value of the game considerably and cannot be sold as a whole. I find this already to be very presumptuous.
Now starting to put a ban on used games goes even beyond that:
I can neither lend nor borrow a game, I cannot sell it at GameStop, ebay or wherever, rentals will be difficult to handle and lastly what if I happen to have two Xbox 720s?
It seems as if we're already used to be pranked by huge companies (such as Sony or Microsoft), because there's little to no resistance to this development. I encourage you all to think about this, even if you don't usually buy used games, because we're also seeing a constant increase in pricing for new games. If used games are going to be banned, they will raise the prices of the new ones until their wallets explode.