Right, maybe it's like an oscillating system where high real estate prices depress family formation, a generation or two passes, real estate becomes cheaper because a third of the population is gone, people can afford homes again, then they have more children, and so on. Obviously heavy immigration breaks this natural cycle. Financializing your country’s real estate and selling it all to foreigners and investors probably exacerbates the problem, assuming anyone who made these policies actually considers this a problem.

Well that was my point exactly, but unfortunately, it's impossible to argue in European politics about the negative consequences of uncontrolled immigration without being branded right wing, or racist or a Nazi, so such debates aren't even discussed publicly in the first place.

This still surprises me. It’s clearly one of the reasons for the rise of the right. People aren’t oblivious to the fact that every decision has positives and negatives, and that on balance people try to choose what they think will be most positive. By ignoring or refusing to discuss the negatives, you intuitively grow resentment somewhere…

And yet Brexit happened anyway.

No but that's just a illustration of the terrible political leadership in the UK, and the impotence of "democracy". Certainly the voters who supported Brexit wanted less immigration.