The Palestinians do have leverage, stop supporting terrorism, stop trying to eliminate Israel. It is that simple but you don’t want to see it for some reason.
Israel hasn’t liquidated the Palestinians, not because they can’t - because they posses the fire power, but because they don’t want to. You would also need to explain how their desire and capability to “liquidate” the Palestinians has actually led to a drastic population growth.
It’s almost as if you’re wrong, and israle doesn’t actually want to liquidate the Palestinians. Careful that you aren’t projecting your perception everywhere and see shadows of the boogeyman you create in your head.