Florida has already so unsustainable that only the US government will insure the structures and buildings. The Netherlands and Venice are also another artificial human livable area. Frozen regions of the world will become habitable so livable landmass will actually increase in northern tundras.

What planet are you living on? There are tons of companies offering private flood insurance in Florida: https://www.floir.com/sections/pandc/floodinsurance/floodins...

Climate hysteria is really something else.

Tons? https://www.sun-sentinel.com/business/fl-bz-hurricane-season... >“In Orlando if a house predates 2010 and is worth less than $300,000, no company is going to write [insurance for] you,” warned Locke Burt, CEO of Security First Insurance Co. in a June 2020 Sun Sentinel article.

https://www.forbes.com/advisor/homeowners-insurance/why-is-h... Residents there that cannot afford the insurance that exists might as well mean that it doesn't exist the same way life saving surgery cannot be purchased by a person makes it nonexistant.

And even more land that becomes too hot, too dry, or not sustainable local sustenance