If you see life as some game to optimize only for yourself not the people around you then for sure as very high earners, easy to move somewhere else, and some do. But from my point of view that’s a sad outlook on life and it’s not all one sided, that professor payed nothing for top of the line education, or child care, or 9 months parental leave, or medical etc etc. The high earners put away some money instead and enjoy lower taxes than us on that part.

But mostly it’s the idea of people deserving a decent life and high base life quality anyway. Most of my colleagues instead come here from other countries.