https://www.forbes.com/sites/timworstall/2017/06/04/milton-friedman-told-us-the-answer-decades-ago-now-itll-probably-be-ibms-watson/#28b00be11bce
Physician specialty groups have created “societies” to provide education, establish clinical guidelines and handle public relations. These range from the Society of Surgical Oncology to the group that represents me and my ear, nose and throat colleagues, the American Academy of Otolaryngology-Head and Neck Surgery. They are also lobbyists, charged with maximizing the incomes of member doctors by influencing pricing decisions made by the Centers for Medicare and Medicaid Services. Those prices become the benchmarks for private health insurance companies, too.
There are so many specialty organizations because each develops authority over a niche market and vigorously guards its turf. Imagine building a house by allowing each workman to do his own thing. The plumber would put a sink in every room. The electrician would install chandeliers on every ceiling. The carpenter would panel every room in luxurious wood. That’s how health care works.