Interestingly, NYC and the four surrounding counties are still growing despite the high taxes. I'm amazed that this is possible.
Of course, if you make a couple of hundred thousand a year, taxes don't bite as much.
If a place has amenities, the "rich" will pay, and generate economic activity. NYC is still the center of publishing and the arts and letters (outside of film), and of course, finance, and that is not going to change. Those folks need to rub shoulders with each other, just like they do in Hollywood.