That's true of PS3 too. Every game on a PS3, irrespective of account, is available to every other account, barring parental controls I imagine. And the ability to share content with friends this way had its own copyright exploitation arguments back in the day, as several people can play the same game simultaneously with only one of them buying it. In that respect you could be looknig at 1/3 the players of a PSN network title, like Undead Nations, actually paying for it, and the rest playing it for free. PSN titles seem to be doing okay. At least, developers keep releasing to it, so they must be making enough money somehow, suggesting game sharing isn't anything like as costly. Taht's the same query over pirating, how much real affect does it have, versus hyporethical worst-case scenarios.