This is something I wonder about often as well. Why are all these coastal cities constantly being pumped full of money in the form of new building and real estate ventures when the forecasts show how risky of a long term investment it is? Sure, you can gain some short term profits, but these investments are being made by large banks with access to data on what these investments will look like _over decades_.

Are people just planning on sea walls, dikes, and other mega projects to deal with shifting coastlines? I can understand it for certain financially entrenched areas like New York City, but still... we're talking 10s - 100's of Billions in infrastructure to preserve these cities.

The cities themselves have an existential threat, one which they _have_ to throw money at to solve. It's the outside investors who _also_ throw money at these areas with the knowledge that _their_ investment requires these mega projects to pan out when there are other less risky investments that I find so mind boggling.