Game development studios and publishers have whipped the debating post of blocking used games for a long time. It’s a contentious topic: gamers want to be able to buy and sell their games as they see fit. After all, they did buy them and developers realize the same game is often sold multiple times without any of the additional revenue generated going to those who made the game. GameStop’s entire business model rests on buying and selling used games. And the latest rumor over Microsoft’s upcoming XBox 720 made a sharp hit on the stock of the top used game reseller.