I remember back in the 60's and 70's when European taxation started to drive an exodus of athletes and entertainers. Actors were already in a special category because of the dominance of Hollywood at that time; no one questioned that an actor might move once he broke out to an international audience and might choose to do the Hollywood thing to compete at that level. But Bjorn Borg caused a stir when he left Sweden, and the Beatles left the UK, and the list went on and on. The general public might not pay much attention to businessmen, entrepreneurs and scientists, but when it hits entertainment and pop culture ....
Here and there, I'm starting to see rumblings that California and New York may be sabotaging their professional sports teams. Now THAT might wake some people up.
If I was a superstar, they is no way I would play in NY or CA. Just the extra taxes alone, would make me say no.