Idk. Delta Dental of MA is what was on my mind. I'm not sure how they could leave, considering MA is in their name, and they pretty much operate in every other state. These companies will still profit -- just not as much as they'd like. We also passed a similar law for health insurance, but the big ones (BCBS, Tufts/Point32) are still around.

And if the CEO of Delta Dental MA, for example, makes $5M a year, I doubt having to pay an additional $160k in taxes is a big enough deal to move.