It'd be hard to blame them at that point because the league will probably be encouraging them to move by then. That wouldn't erase the blame the Maloofs share for their role in allowing things to get to critical mass, though. If you really want to put the blame in the right place, blame the NBA for allowing buildings to become more important than the team, city, or fans and setting the precedent that owners not pay for their own buildings...but that's a whole other issue that there's no reason to even get into.