Notice, the erosion wasn't just people and houses, but land too. Imagine coming home from a trip, and not only is your house gone, and your neighbors are gone, but the plot of land on which you might have hoped to rebuild said residence is also gone. If you had insurance, this would be called an "Act of God" and not covered. There's lots of emergency relief, but hopefully there will be relocation efforts for the displaced survivors.
See Here for the whole sequence of before and after pics.