What would be your "cohesive national response"? The needs and resources of people who, like you, reside in Nantucket and Martha's Vineyard are vastly different than a 7-11 clerk in Alta, Oklahoma.
You might try living here before you start making statements like that. You are clearly convinced that everyone on the Islands must be wealthy, when the reality is that is far from true of the year round resident population. On top of that many of our workers work seasonally (80 hours a week in season) and therefore still haven’t been able to collect their unemployment “bonus”.
As for a cohesive plan, the governors of most of the New England states plus NY and NJ agreed early on to work this problem in concert. Have you looked at a Covid map of densely populated areas recently? So far the open slowly but surely seems to be working far better than “hey everybody, the heck with the virus, let’s get back to work.” I guess time will tell.
Dave