When risk outruns the models, insurers stop underwriting it — and the rules have to be rewritten to bring them back.
~1 million policies
State Farm's planned California withdrawal (3.1m → ~2m by 2028); stopped writing new home policies in 2023, non-renewed ~72,000 in 2024.
+17% / $400m
The regulator approved an emergency 17% increase on existing policies to keep State Farm's California unit solvent — conditioned on a $400m capital infusion from the parent.
rules rewritten
The regulator changed the framework to allow forward-looking catastrophe models (and reinsurance costs) in pricing, to stop insurers exiting.
The reading — and its limits
The chain is unpriceable risk → financial stress → exit. A non-stationary peril (wildfire shifting faster than the historical record) met a pricing framework that required rates be set on past data and barred forward-looking models — so the distribution moved but the rules forbade pricing it, and the insurer's most honest response was to exit. The proof comes from both directions: the insurer that walked away, and the regulator that rewrote the rules.
Method State Farm figures and stated reasons from its own filings and California Department of Insurance filings. The pricing-framework constraint and its 2024-25 reform from the California Code of Regulations directly (10 CCR 2644.25.1; 2644.4.5 / 2644.5) — not secondary characterisation.
Computed 22 June 2026