So? That doesn't imply you should be allowed to copy it and run it everywhere. Just that you're able to transfer the license. With Steam that would mean using some sort of tool or request form to move a game you own to someone else with a Steam account, after which you will no longer have the game in your list but the other person will.

Stainless, on 24 February 2013 - 10:09 AM, said:

Never gonna happen. Much more likely is that distributors of downloadable content are required to allow the transfer of purchased content to someone else. This is already happening with other software licenses (such as MS Windows) that according to the EULA cannot be transferred, but the EU says they can.

Right, they should be able to just replace the disc if it's unreadable or something. There is of course a grey area regarding bugs, but if it gets to the point where it's outright not usable, the store will get many complaints. They may ignore the first few, but as soon as they notice it's a fundamental flaw with the product they usually will accept returns. I doubt whether this is any different at Gamestop.

The number of games that require some sort of online activation is ever growing (and the reason for that is to make money on second hand sales). If a customer used his key, the game cannot be resold for normal price. I think it would be pretty tedious to keep a list of games which have such a key, so it's easier to simply refuse any game that has been opened.

Borderlands 2, obviously!