Someone who claims to know told me that if Israel closed out the West Bank Arabs, Israel's economy would collapse. Apparently, most of Israel's menial dirty work is done by Arabs, same as Mexicans do most of it in the American southwest.
IOW, Israelis are stuck with the Arabs so long as the Israelis refuse to clean their own toilets, or wash their dishes, or dig their ditches, etc.
Americans complain about "illegals," but then refuse to do sweaty dirty work for low wages. Instead, they hire the "illegals" they complain about.
I guess it's the same in Europe. And the same in Israel.
No nation can close its borders until it assumes the burdens of self-sufficiency.
Then that guy knows squat. For years guest workers- mostly Thai and Romanian- have been working in increasing numbers in Israel. There will always be sources of willing workers who have the extra advantage that when they get angry and blow up at the boss do not do so literally.
In fact the opposite is true. Without Israel's strong market economy, the Pals are doing a gainer into deep penury that the UN and Arab blood largress can not puull them out of.
Maybe if the supply of cheap illegal labor dried up, employers might have to pay more. Heck, if they paid enough, I'd wash cars.
If that makes car-washing expensive, then it would pay for someone to invent a better way to wash cars--or invent a paint or coating that when applied to cars, would make cars self-cleaning.
But we'll never know because why bother inventing anything when we can have economic slavery instead.