Let's not be naive here. Hamas' position was deliberately cultivated by Israel to counter Fatah and the left-wing factions. The Israeli "occupation" (or whatever you want to call it) serves to keep Hamas in power. When you keep people down, they will resort to extremism. It was really no surprise when Gazans voted Hamas into office. So, that being said, of course a state based on the current political climate of the Palestinian Territories would be problematic.