It was always a terrible idea for the government to offer insurance when private insurers wouldn’t. It just forces everyone to subsidize the lifestyles of people who choose to live in disaster-prone areas. Perhaps it was necessary for a time to avoid major economic upheaval, but constantly rebuilding in areas where disasters keep happening should never have been allowed to become a long-term policy.
That’s literally what’s happening at the state level in California. And the insurers got out because they can’t cover their operating expenses while charging what the state considers a reasonable cost.