This is most definitely true, but I think it highlights the mistaken idea that individual healthcare is a commodity. I think we all recognize that an excellent home builder, auto mechanic, attorney, software developer, etc., can have an outsized impact on the outcome of potentially severe or expensive situation but we often put less effort into finding a healthcare provider for a particular malady. I've had some severe negative outcomes from questionably competent, focused-on-billing doctors where I would have been better off not seeing a doctor at all than seeing them. Unfortunately, there's no reliable way to separate the truly skilled doctors from the ones who barely passed their boards.