"Cuomo begs wealthy New Yorkers to come back to save the city and pleads 'I'll buy you a drink!' as he fights off calls to raise their taxes - which he fears may scare them away forever"
Taxes are only part of it, many said they fled due to violence and lack of policing.
When very wealthy people are being robbed and mugged just outside their buildings, they are going to come back.
They will dump their homes and relocate to safer cities. When they realize that everything is cheaper somewhere else and they can visit NYC when they want; and at a far less cost than living there, even better.