Aii, here we go with the used game discussion again.
Used game sales are not the cause of unprofitable publisher's problems, nor would the disappearance of used game sales solve anything--in fact, in the absence of other changes, it would most likely hurt the industry from end to end.
Aside from that, they're not going away through any amount of complaining or lobbying or strong-arming, nor will digital distribution change this anytime soon. The only thing that will lower or cease used game sales is a lower retail on new game (and a higher margin on new ones), so that selling back a used game isn't worth enough money (or store credit) to be worth the while, or so that profit on a used game sale isn't worth the store's effort.
Publishers are clearly not willing to pursue lower retails, nor willing to give higher margins, so they can live with the situation they've created. Nobody else (except, possibly, consumers) has the power to change the situation--certainly not retailers.