This might be a bit off-topic but generally speaking matters IMO. Two of my DB (I have 4 DB) have been insurance brokers for 20+ years. They are brokers for life, car, homeowners, and umbrella policies. They do not sell or broker Medicare supplements which obviously are regulated by the federal govt. for Medicare.
I told the more experienced brother about our discussion about closing the books and raising insurance premiums in general. He said this is absolutely done. All insurance companies are in it for profit. Whether they close books or single out specific areas that are more expensive to raise rates. Example: If there are more claims because you own a Volkswagon, Volkswagon insurance is more expensive. If in a zip code, county, or state that has a high rate of storms, floods, etc, homeowners insurance is expensive or unavailable depending on the company. If there is a cluster of anything that creates more payouts thus higher premiums, insurance companies will charge higher premiums or deny coverage. It is the way of all insurance.
Closing books is one way (and it is legal) to raise rates. And some companies (not one) do this. It is specific to where there are more claims, for whatever reason. Thus, it is very expensive to get homeowners insurance in FL. Many companies will not offer homeowners insurance in FL. for obvious reasons.