You can’t find another city that even approaches NYC without moving to another country. And moving to London or Paris to escape taxes doesn’t make a lot of sense.
In case of the cities you don't even need to move that far. I know multiple people in Seattle who just moved to nearby towns 105-15 minutes by car, 20-45 by transit) to avoid Seattle specific issues, and some people who move just outside of king county to avoid even more nonsense. Mostly techies, but not exclusively.
It's not like American cities haven't been hollowed out before, NYC included.
I'll also caveat that any parallels you might see in Seattle don't really apply to NYC. Besides the low car ownership rates, wealthy individuals choose to in NYC for it's convenience and culture, which really are unique in the US.