It's a financial problem, ultimately. Living in Antarctica is difficult and expensive because of the conditions, but with enough money it's manageable.

California is not very hospitable on its own but with human intervention it was made liveable. But that is now running out, because e.g. the water supply is no longer adequate for what is used.

But this is the difficult situation we find ourselves in; due to climate change, hospitable areas are no longer hospitable, and while you can throw money at the problem, it becomes exponentially more expensive to continue to live there. If this continues, it will trigger a (mass) migration. This can be applied everywhere, and the phrase "climate change will trigger mass migrations" has been uttered many times already. It however feels like people only considered this to be a problem in e.g. the global south, affecting poor people because they don't have the financial means to shape the earth and their living conditions by throwing money at the problem.

I live in the Netherlands that for hundreds of years has thrown money and resources at the problem that it's below sea level and prone to flooding. We're still managing, but still get flooding in some places due to e.g. heavy rains deeper in Europe. But if the sea level goes up enough, either we'll have to spend billions in building higher sea walls... or abandon regions entirely. The worst case predictions mention a 2.5 meter sea level rise by 2100, that'll definitely test our infrastructure to put it mildly.

(this comment was a reply first but moved it to a top level one because I added my main article comment as well).