A large component of the dutch GDP as well as population is below sea level. They have been building dykes since centuries. Considering the large coastline of the US, there is definitely a huge cost to climate change induced sea level rises, so some poorer settlements will likely be given up but on the other end I doubt that e.g. downtown boston will be one of those settlements. It's more a question of how economical mitigation measures are vs resettlement. Overall the costs and damages will vastly outnumber the (massive) investments that we'd have to do now to slow down climate change.
Living for today and profit today is a common human trait. We (unfortunately) think in human lifespan as a "long time" and many don't care what happens to future generations after they are gone :(
Sooo... invent technology to make rich people live forever for them to start to think on long term scales? Or they'll just build their mansions on the hills while the poor valley dwellers drown and die of old age? Interesting question.
The article mentions several prognoses for a timeline. It seems still we decades away from getting into the 3-4 feet range. Not that I personally think there is urgency for mankind. But not so much maybe for the wealth of a billionare.
Most of the wealthist cities in the world are along the coast.
Sea level rise is not going to have much negative effect in inner Mongolia or Midwest.
So I am quite curious why rich people continue to ignore it.
Maybe they actually believe it to be a good thing somehow ?