Because it would be a separate initiative from the rest of the country. They'd be administering vaccines despite what the federal govt wants. If these states are pooling their own resources to keep their residents healthy, residents from other states should have to wait, or join the initiative.
Again, no reason to do so. Either the insurance company would pay if the person would pay. And there has been no discussion of doing so.
That depends on your state. In NJ anyone is able to get a COVID vaccination free. Whether you have insurance or not
That may well change after the next week. Governors of all the mid Atlantic and NE states (except NH) are working to get a regional recommendation and distribution to make sure that happens. But, again, supply may well be reduced by this “administration.”
And I haven’t seen anything that says that if insurance refuses to pay that you can get it free. CVS is stating it will be $200.