Earlier quoted context omitted.
It doesn't matter to an insurance company how likely car crashes are -- that just determines what the company charges in premiums. All that matters is that the likelihood is well understood and that the company has enough customers to stay solvent. Insurance companies essentially work by the Law of Large Numbers: that in a large enough number of trials, the average value should approach the expected value. In real wo…
I think you overlooked that in GTA we have a > 100-year-storm of destruction In the game world, insurance companies wouldn't have predicted the level of claims.
But if the game's premise is that the mayhem is normal within the world, then insurance would be stupid expensive. But, assuming the market can bear those prices, insurance would be a good business to be in.