We can still build hardened ports and port cities. If you want a coastal vacation house, that’s going to be an (even more) expensive luxury.

How many of the critical workers who maintain port facilities live in beachfront houses? Approximately none. We can quit subsidizing wealthy beachfront home owners and limit new housing to places that are more defensible.

Returning all of the current privately owned beachfront to natural habitat would be absolutely glorious. We can make exceptions for public facilities serving the greater good, like ports.