I've seen most of that here in SW Florida and in the FL Keys after several major hurricanes. A lot of people under insured and some without insurance. Sucks when you are insured for say $400k and to rebuild to meet code its going to cost over $800k. A lot of those people sell the property and leave the area. Always seems there are people with money willing to come in and pay what it takes to have what they want. The price of paradise.
I remember here after hurricane Andrew in 1992, that devastated Homestead, major changes were made in the building code to construct structures that were much more wind resistant. People found out that tape on the windows and paid up insurance just didn't cut it. And what wasn't dictated by building codes the insurance companies made sure there were huge incentives to upgrade or pay the price.
Also we went through, and are still struggling, with insurers willing to take on the risk for an affordable price. The state stepped in and created Citizens Property Insurance of Florida to insure folks when no other insurer will. It's the only insurance I know of available in the Keys. Lucky for me I built to the new codes and then some, and have done well even with the direct hit from hurricane Irma. Had damage but it was just below my $14k deductible. After that I dropped that super expensive insurance and now self insure.