As long as the filthy rich see a decent chance to buy their way into some nice private paradise, the will let the rest of us drown like rats. Better prepare for a + 6°C world...
The greatest wealth transfer in history will occur as the population on the coastline is forced to relocate due to sea level rise. First the real estate value of what they are trying to sell will crash. Then the value of what they are trying to buy will skyrocket. The wealthy inland owners will benefit from the greatest dislocation in the history of human civilization.