it will be interesting to watch NY (and/or CA) put something like this in place and observe from afar. i strongly feel that states should be much more aggressive running policy experiments if their constituents desire them, and at the national level we all get some benefit of seeing how things turn out in real time. all that said, assuming there is some tangible tax increase, NYC high earners are going to be knocking…
Remember that this expense is also reducing the cost of employers. One of the best ways to finance this would be a payroll tax that is basically equal (in aggregate) to the insurance the company is (usually) already paying.
Nobody is going to believe that there are savings to be had, so it's best to start by reducing friction.