Look for the reasons why Kahane, although he was admired by Zionist Israelis, did not succeed in convincing Israeli Zionists to exterminate or expel all Palestinians. Remember, why.
Also remember the recent video by "nice Jewish Boys" where the host says "Give me that button, I would press it right away!" (press one button - and all Palestinians gone). Israeli Zionists have a few reasons why they still don't kill everyone right away. Firstly, it is not easy physically. Even Hitler did not succeed in killing every single Jew. Just because the majority of Jews survived the Holocaust, do you deny that Holocaust ever happened? Secondly, Israeli Jewish society does not have any positive objective. They live off constantly inflicting pain and suffering on the indigenous. For the same reason, a pathological sadist does not kill his victim, but keeps it alive to continue torturing it. Torturing Palestinians is the favorite Israeli sport. They derive their main pleasure from abusing their "Untermenschen". Thirdly, Israeli Zionists will not get such awesome arms deals, security business profits and billions of dollars if they have no "terrorists" left to claim their defense from. Palestinians are their bread, butter and caviar, like human subjects of medical experiments for mad scientists.
There are many reasons.
One last reason is that killing every Palestinian or expelling every Palestinian from the land will damage Israel's image. At this time, as I can see with people like you, there are still armies of those who defend israel's actions, even while it is committing genocide. The total extermination, however, won't be defensible anymore. Even by "Hamas" myth.
Just to remind you, A GENOCIDE does not mean physical erasure of an entire people. There is an official definition of what genocide is. You can easily read it.