Israel’s major problem is that circumstances always change. Predicting the military capabilities of the Arab and Islamic worlds in 50 years is difficult. Most likely, they will not be weaker than they are today, and a strong argument can be made that at least several of their constituents will be stronger. If in 50 years some or all assume a hostile posture against Israel, Israel will be in trouble.
Time is not on Israel’s side. At some point, something will likely happen to weaken its position, while it is unlikely that anything will happen to strengthen its position. That normally would be an argument for entering negotiations, but the Palestinians will not negotiate a deal that would leave them weak and divided, and any deal that Israel could live with would do just that.
What we are seeing in Gaza is merely housekeeping, that is, each side trying to maintain its position. The Palestinians need to maintain solidarity for the long haul. The Israelis need to hold their strategic superiority as long as they can. But nothing lasts forever, and over time, the relative strength of Israel will decline. Meanwhile, the relative strength of the Palestinians may increase, though this isn’t certain.
Looking at the relative risks, making a high-risk deal with the Palestinians would seem prudent in the long run. But nations do not make decisions on such abstract calculations. Israel will bet on its ability to stay strong. From a political standpoint, it has no choice. The Palestinians will bet on the long game. They have no choice. And in the meantime, blood will periodically flow.