[yabadabadoes]

You should probably look further into the brain drain which is a global theme with complex ethics. Independent people moving are not really bad or necessarily hurting a state they leave as they send remittances, move back to retire, etc. The overall affect of states incentivizing bulk drains can be brutal though as can the resulting investment decisions of a state that knows it's brightest will be drained. At any rate, in the big scheme of things don't worry about NY and SF, they (and even their own domestic victims) are not victims of drain on average.