I don’t think higher insurance rates are the thing that will convince people not to live in a flood plain. Most people don’t even have flood insurance when it’s being subsidized because it’s already so expensive.
As conditions worsen due to climate change, more and more areas will get hit harder and harder. The poorest people living in those areas are going to be the hardest hit, because they can’t afford to insure their home, nor can they necessarily afford to relocate. This situation is amplified by the fact that low-income housing is typically built in less desirable areas (like flood plains, it turns out) because the land itself is often relatively inexpensive, and people in more affluent neighborhoods don’t want The Poors living across the street from them.
