There have been arguments that the wealth tax proposal has loopholes that would allow it to be extended to much lower levels of wealth without a further amendment. More importantly, if that’s the way the state’s politics are trending, it might be worth it to leave and come back if the threat goes away.
Who knows, maybe one of the band members invested in a successful startup, or is an LP for a VC that did. That’s not unheard of for the entertainment industry. Most people wouldn’t have pegged Ashton Kutcher as an investing genius, but he has been highly successful.