You all may find this interesting reading. It addresses collapse regarding insurance and how it has evolved through the years. It will also address GH85Carerras comments as well. Unfortunately I think most of these people will be SOL unless they can find culpability someplace else to go after liability to pay for their losses.
https://www.adjustersinternational.com/wp-content/uploads/sites/2/2015/05/3039_Insurance_Coverage_for_Collapse.pdf