No doubt there are winners and losers. My choice is, as a rule, to only insure for unlikely but catastrophic events.
House insurance. I couldn’t cover the cost if it burned down.
Car insurance. Requiured by law but in any case I couldn’t cover an expensive medical claim or total loss of £18k car.
Travel insurance. I couldn’t afford serious USA hospital treatment.
Gap Insurance? Worst case I lose £2 or £3K. I don’t count not getting return no new cost on a 3 year old car as a loss. Insurance is to put me back where I was. I’m quite happy getting 3 yr old price (more or less) for a 3yr od car.
Likewise I don’t insure pets, appliances, UK travel etc etc. On average insurers make money even after overheads and covering the high risk and fraudulent claims. Over the long term I’m sure I am well ahead from not over insuring.