I suspect it has or will soon reach the point where the Kelly criterion says mathematically I'd be better off to self-insure - if I didn't have a bank loan.
It's not just insurance (which is likely also weather-related); after a fluke super-cold Winter we had, our natural gas companies incurred a huge wholesale market bill which they've passed on to customers. I have a family member who owns his house free and clear whose gas bill went up so much he could no longer afford to heat his house. The gas company still tried / is trying to assess a one-time very large retroactive fixed fee even though he turned off his gas.
My point, I guess, being even homeowners are not totally insulated from being screwed over by outside market forces.