it's the same with the West Bank. Annexation has been gathering momentum for awhile now in Israel, but Jordan would refuse to take in massive numbers of refugees, and Israel would be caught in the cleft stick between giving Palestinans full and equal civil rights and threatening the Jewish majority or apartheid (which already exists in the WB, but they pretend it doesn't under very flimsy pretexts).
the reasons Egypt, or Jordan, or etc don't want to take in a massive influx of refugees are the same reasons no govt would want to. Every ruler in the ME surely remembers 1970 when the PLO almost toppled the Hashemite monarchy in Jordan, or 1982 when Lebanon got caught in a middle of an Israeli-PLO war. these population transfer (that is, ethnic cleansing) ideas only make sense from the Israeli perspective, which is why it will never happen.