And an ability to drive from one end of their border to another in a day, or less. The U.S. is too large for nation-wide consistent quality healthcare. Of course, if people REALLY wanted to improve it they could.
In aviation, you can pool all the resources you need to build perfect planes. You can't do that with healthcare. For all the expertise here in the Boston area, what does it do for anyone going to a doctor in Alabama? Nothing, unless that doctor prescribes a drug designed here. Another reason pharma is so big in the U.S. A doctor won't move to bumfck anywhere, but you can ship drugs there.
What's unsaid is the people of New England don't want to pay for the healthcare of the people in the South. Good healthcare people won't move there. Unless paid a lot, and some not at any price.