I think they're acting on that message, in a different way, though. The retail model was always space constrained. They have to take Oblivion off the shelves

I think they're acting on that message, in a different way, though. The retail model was always space constrained. They have to take Oblivion off the shelves eventually to make room for Skyrim. That created a window where you had to buy now or you have no choice but used. Digital shops have no such limit, so they can just keep all product on a gradual downward pricing spiral. And the buyers can just wait forever until their personal threshold is reached. Now, the interesting side of it is what effect resale has on people's price thresholds: do buyers price the trade-in value of the game into their purchase decisions? I could see someone saying "I'm willing to buy the $60 PlayStation disc I can trade back for $20 when done, but the corresponding PC version (with no resale option) has to be $40 to provide the same value for money" Maybe not consciously, though.