Netanyahu does not "support Hamas". Netanyahu did historically prefer Hamas to be in control of Gaza both for some sense of stability (vs. potential total chaos) and as a way of dividing the Palestinians between Hamas and the Palestinian authority. This has obviously turned out to be a big mistake but it's not the same as "supporting Hamas".

Since you're saying "70 years" that's sort of a sign you're approaching this from some sort of ideological perspective. The West Bank and Gaza were under Jordanian and Egyptian rule respectively until 1967, so about 48 years ago. I.e. your problem is with the existence of Israel in the 1967 lines and Jewish presence and rights in the region and you, like Palestinians, do not support a two state solution. I'll take your 70 years and raise 3000 years in this case. The Jewish people are the indigenous people of the region, not the Palestinians, and they have the historical rights.

EDIT: It's worth noting that Israeli governments have done a lot. They agreed to give the Palestinians autonomy as part of the peace agreement with Egypt. They were engaged in good faith efforts to resolve the conflict during the Oslo Accords. They allowed Palestinians to return to the west bank and Gaza from other countries as part of those accords, they allowed the establishment of the PA and gave it control of all the major cities, they allowed the Palestinians to establish a police force and armed and trained that police force (weapons that ended up being turned on Israelis). They withdrew from Gaza in 2005 and returned it to Palestinians.

What have the Palestinians done other than use more violence is the question.