I historically got very irritated by so-called suppliers of utilities. For most of what we need there was one state-owned system and a host of parasites acting as sales agencies.
Things have changed for telecoms as mobiles are a genuine choice, having different infrastructure.
There is some change in electricity as the UK now has numerous suppliers at different prices and the sales agencies buy and sell electricity from those sources. Hence the recent chaos, which I have managed to survive as I am with a "provider" who buys electricity mostly from wind power and hence the price hasn't gone up. The small premium I paid when I signed up compared to coal and gas-sourced electricity has disappeared as fossil prices have risen, I now have "cheap" electricity.
Insurance is sort of sales agencies, I find that all the cheapest prices have the same underwriter, so I am stuck with them unless I pay a fortune. What does help is good service when you have a reasonable claim and that is worth seeking out.