Cat bonds scale to the size of the financial market vs the size of the insurance premium volume annually. The financial market is vastly larger, multi-trillions instead of billions in insurance premiums. Financial markets can absorb catastrophic risks, and it's impossible to charge high enough insurance premiums to anticipate massive CAT losses.
The hard part is to find good math and convince others of occurences that human nature tends to deny.
Bbbbbbb we have a right to build where we want even when likely to be blown away. It's beautiful when it isn't raining.