Don't worry, they don't and never have. I also find your question quite disturbing to be honest.
They're responsible for the rise of Hamas, which hijacked the political power after their win in 2006 and refuses since then to hold any elections, by imposing an inhumane blockade that would've been unthinkable and quickly dismantled if any other country in the world ever thought of it. They've sidelined and marginalized the moderate Palestinian Authority and there's been no attempt to move the peace process forward since the end of Ehud Olmert's mandate in 2009. When his successor Netanyahu came to power, the israeli politic has consisted in stalling and delaying any peace talk while dramatically increasing the illegal settlements. He has absolutely no interest in peace, let alone a two-state solution.
The restrictions blockade obliterated Gaza's economy, causing 52% of unemployement and about 68% of the households in Gaza to be food-insecure. Israel controls the power lines and access to water. The inhabitants there experience daily 17 hours of power cuts. 81% of the population lives in poverty and 10% has access to clean water (All the numbers come from the UNRWA). No one can leave Gaza without the approval of Israel and/or Egypt and it happens very rarely. There's no future or hope for the population, 65% of it being under 24 years old (high natality birth rate and low life expectancy). But yeah let's call that restrictions.
There's only so much despair people can take. Go on a population hard enough, make them desperate enough and they tend to revolt or turn to extremist organizations. History is littered with similar examples.
Just to be clear, I'm absolutely not condoning the horrible and despicable massacre that occured in Israel and think the Hamas is a blight for the Palestinians. There's no justification whatsoever for what they did. They achieved nothing since they've been elected, and what they want now is to watch the whole region burn.
I've yet to see how a country with one of the best armies and intelligence agencies in the world, backed by the whole western world and the most powerful military in history (hint: the US) would be wiped out in a matter of months by a group of lunatics armed with AK 47s and unguided rockets. This ridiculous myth needs to die.
Gaza is going to be flattened and possibly either re-occupied or simply annexed, tens of thousands of people will die. Hundreds of thousands will flee and not allowed to come back. If the conflict doesn't become regional and when the dust settles, questions will be asked in Israel, Netanyahu and his government will step down, a more moderate government will be elected. It will be business as usual and nothing will change for the Palestinians.
The world simply doesn't care enough for it to change.