alt Hacker NewsThe real issue is global warming causing an exponential rise in tail risk events. It's exponential because even a linear shift in temperature causes an exponential rise at the tails (look at how a normal distribution works).
Insurance is based on statistics. The math they use assumes stationary distributions. Insurance companies can't deal with shifting distributions well so they take the losses and then exit markets.
Global warming is going to mess up insurance as we know it for that reason. Not sure property insurance, but all kinds of insurance.
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They exit markets due to regulations banning them from charging the true cost of risk. Large insurance companies don’t just go broke. They have re-insurance that caps their losses. It’s becoming far more difficult to get reinsurance and the premium caps make reinsurance unaffordable for the insurance company so they leave. The business model is managing the money - they don’t much care about the claim losses over the long term and taking 1 percent of rising premiums to be a manager is a solid business model.
This is mostly a probability nitpick:
Most disasters follow power laws and other fat tail which don't have the same effects in the tail as a Gaussian. If you shift 1/x^a by c, you "only" get a polynomial increase.
But also, if you shift the mean of a Gaussian, the increase isn't exponential, it's super exponential (e^(x^2) to be specific).
> Insurance is based on statistics. The math they use assumes stationary distributions. Insurance companies can't deal with shifting distributions well so they take the losses and then exit markets.
Sure they can, that's why they hire statisticians. They routinely deal with insurance of much rarer events where we have much worse models than climate change. They're just banned from charging the actual rates, because it's politically unacceptable.