The Mises Institute makes the case in more depth. Excerpt:
The correlation between poverty and destruction resulting from natural disaster seems to hold up not only with a cross-section of nations, but also over time. As nations become wealthier, their losses of human life from natural calamities tend to fall. Countries that experience economic growth are putting themselves in a better position to reduce the number of deaths that result from natural cataclysms, and the clearest way to produce that economic growth is to allow people to interact in the marketplace without government intrusion.