I dont think landslide insurance is offered to most people.
Flood insurance is, and earthquake insurance is so expensive that most people dont buy that either.
Sure hope none of those people were flipping houses....as their investment truly flipped....down a hill.
I could be mistaken, but I thought that Lloyds of London (and probably some other companies) would insure almost anything. It would not be offered to them but it would be available. The risk/reward ratio would simply not be sufficient to induce all parties to sign a contract for the insurance.
Flood insurance is, and earthquake insurance is so expensive that most people dont buy that either.
The key to keeping insurance premiums low is widespread participation and limited risk. These factors were not present in this niche market.