I totally believe you could find examples of insurance products that have increased in price 4x over the last 20 years. I have a harder time believing that obstetricians were paying $1m/year in insurance premiums 20 years ago (the claim in the GP) when obstetricians make on average around $300k per year now. You'd have to believe they gross around $1.5m to net out a $300k salary, which seems unlikely.