Even given the option, most if not all will choose to not leave. Since 48 the Palestinians have been chanting “from the river to the sea” and not taking lots of peace treaties offered by Israel and other nations, based on the premise that they’ll stay in their current 67 border.

Not to mention lots of Jews also don’t wanna live in a non-jewish state of fear of prosecution, pogroms and antisemitism, which you can see examples of happening right now in Europe.