The other side of the "market" is also not very "free". Health care facilities are heavily regulated - and I don't just mean for safety. Try opening an MRI facility or other capital-intensive facility... You'll be required to obtain a certificate of need from a state board. That board will be heavily lobbied by existing supplies to minimize competition from upstart facilities. IIRC, around 2/3 of states have these laws in place.

https://www.usnews.com/news/best-states/articles/2021-07-09/...