> This argument is used again and again and I wonder: Why do "people with money" stay where they are when there are countries, islands, even just states where there is less taxes to pay?

Like others said in the comments here: there's a balance of how much money you have to pay as tax until you move to other places. New York is taxing people on top of whatever other taxes are there just because they have money.

My issue is that if people earned the money fair and square, they shouldn't be taxed because they were successful. And this is what this tax does: oh, you afford to buy a 10M home, here's an X% annual tax just because.