ps im talking about real persons here, not corporations
Your logic amounts to assuming you can significantly raise the price relative to other states on the basis that they already pay a bit more which I don't think follows. The degree is off but also the relative difference isn't there. Living in an expensive house in a big city is going to cost extra no matter where you do it but the taxes we're taking about will only exist in some of those cities.
Meanwhile the higher up the income ladder you go typically the fewer constraints there are tying you to a particular physical location. On the extreme end, if you make it high enough it can get to the point where you can literally relocate to a different country without much issue and it may be worthwhile for you to do so.
I really don't really see much of any chance for downsides to 99.9% of the population, but plenty of upsides. If the only thing maintaining the US economy is a a small percentage of rich people sitting on stacks of capital, the US economy is already doomed and the people on top are just trying to be the last ones down into the water.
In the business world how many companies are just coincidentally booking all their revenue in Ireland?
I'm really not clear what point you're trying to argue here. Someone upthread suggested that a sense of community would prevent the disproportionately wealthy from relocating to nearby states to avoid higher taxes. I call bullshit, dependent on the size of the relative tax gap. They don't even have to sell their house, just purchase a second one and reside there more of the year.
Countries fight back with exit-taxes, controlling asset movement, and taxing (now) foreign owned assets. The US in particular makes it very difficult to take your theoretical winnings from the table.