We should have a one-time buyout for flood zones: pay someone enough to buy a median home somewhere similar and turn the land into a nature preserve (let mangroves return to protect Florida coast, etc.). Put a cap on it so we’re not buying new mansions for a few rich people with beach houses but otherwise keep it simple so people aren’t impoverished into becoming a drain on society.

I have no expectation that we’ll be willing to invest in our neighbors, though.