By eliminating personalization you’re doing the same thing - removing price as a signal.
It’s good when insurers personalize! Install screens to prevents embers from entering roof vents? Great. You should get a discount!
It’s a win-win. Consumers are incentivized to take measures to reduce risk.
A lot of the "big boy" insurance on ships etc actually have inspectors - they'll come and inspect your ship (or industrial plant etc) periodically to confirm it meets the agreed safety standards. And if it doesn't, no insurance! That really aligns incentives.
And this is exactly what the new agreement b/w the insurance commissioner and providers does. Which went into effect ... Jan 1, unfortunately.