P.S.
Medical associations, accreditation limits, licensing, education restrictions, and other legal hurdles on practicing medicine play a significant role in keeping medical costs high. That could be a thread all on its own.
Historically, government control of large organizations has often resulted not in the organizations being kept in line, but in those same organizations becoming an enthusiastic part of the control system.
You'd be shocked at how many requirements to enter business in a certain field are less about protecting consumers and more about protecting large and powerful competitors and entrenched interests.