Hypothetically
If you illegally move into your neighbours house and throws him out and then you stay there in his house for 70 years while he and his family live in poverty and every time he tries to pick himself up you kick him down to the gutter and then one day his kid throws a rock that kills your kid would you then murder 25,000 kids and commit genocide and try to starve the rest of population to death?
Or you know if someone hurts someone and they run into a school to hide do you then send in the police to try and capture the guy or do you just bomb the entire school?
Any group of humans can thrive if they stop fighting with each other. The main difference between a successful and unsuccessful nation is conflict.
Are you saying that Israel has prevented Palestine from building their land into prosperity for the last 70 years?
What about African countries, who is preventing them from thriving?