In some sense The Netherlands is the only country on the planet to have the political structures in place to deal with rising sea waters.
What do people think Florida is going to do? They're already losing their drinking water and they're still in denial.
And it really is about having social and political structures in place to deal with problems of this magnitude. The engineering questions are largely understood. Build pumps, dikes and create flood plains. We shouldn't focus on the engineering problems. The problem is one of coordination and mass mobilization of political will, and that already exists here.