That is a good argument, but who is to say that the game couldn't one day escape from an attic, landfill (doubtful on this one), or a thrift store and find a good home? Also, with my slightly animistic beliefs about video games (among other things), I feel it's a shame to extinguish the soul of a game, regardless of if anyone ever plays it again. They have an inherent value apart from any value anyone else derives from them. This is, of course, an abstract argument about their worth, but since the discussion of ip (which is also an abstract idea) is related to it, I feel it is sorta relevant.