Lloyds of London, for example, has already been moving into the market for insurance for homes costing half a million dollars or more and located along coastal waters, whether in Florida or the Hamptons or elsewhere. If rich people want to put their mansions at risk, there is no reason why they shouldn't pay the costs, instead of forcing the taxpayers to pay those costs.
What about "the poor"? As in so many other cases, the poor are the human shields behind which big-government advocates advance. If you are seriously concerned about the poor themselves, you can always subsidize them and avoid subsidizing others by having means tests.
Means tests are anathema to the political left because that puts an end to their game of hiding behind the poor. Compassion is a laudable feeling but it can also be a political racket.
As with so many government programs that people have come to rely on, phasing out state and federal disaster relief programs would not be easy. In an election year, it is impossible.
Fortunately, there are years in between elections, in which it is at least theoretically possible to talk sense. Whether the risks are hurricanes, earthquakes, floods or forest fires, people who have gotten themselves out on a limb by taking risks in the expectation that the government will bail them out can be gradually weaned away from that expectation by phasing out disaster relief.
The alternative is to keep on forcing taxpayers to be patsies forever, while politicians bask in the glow of the compassion racket by throwing the taxpayers' money hither and yon, while the media applaud the courage of those who rebuild in the path of known disasters.