A more effective way of approaching this goal would be to propose a seastead as a way of creating valuable waterfront property as part of an existing coastal ci

A more effective way of approaching this goal would be to propose a seastead as a way of creating valuable waterfront property as part of an existing coastal city. The technologies could then be developed with less political controversy, and once the technological/practical concerns are ironed out, it would be easier to build a more politically-contested settlement. You would no longer be confronting political and practical obstacles simultaneously.