I think discussions of health care economics pay far too little attention to the question of pre-modern health care. People have been earning a living as medical professionals for a long time. And yet everybody knows that the invention of actually useful medical treatments is pretty recent development. Surely this tells us something about the nature of the health care consumer’s ability to find and purchase cost effective treatments.
This is something that Mark LeMoine pointed out to me when I was interning with him at Spectrum Health - most health care is something that no one ever wants to buy. And when you're in a position where you do want to buy some health care (that is, you have a health problem that needs attention) you often don't have the time or resources to compare doctors/facilities, or make an informed choice about what is quality? and how much will it cost?
So, even though I often unfavorably compare the health care sector to other service sectors, health care is not analogous. It offers a service that people don't want to buy, don't want to research, and often can't find accurate or helpful information on.