One of the problems with digital game stores is that once a game is removed because of licensing issues, it will not be available for purchase. If you bought the game no problem, you can download it again as many times as you want, but if you want to buy the game there are no options for you. One way digital stores can help with this is by allowing the owner of the digital game that was removed to sell it. The digital store would only work as an intermediary to transfer the digital game from one account to the other by charging a fee for that. This would be similar to GameStop and how they sell used games, but only applied to digital games that have been removed.