The problems that medicine has with free markets apply least to elective, cosmetic procedures like laser eye surgery, and that is naturally where market forces have had great success.

There are plenty of free markets in other sorts of medicine out there, just not in the USA. They are often very good if you have money, thorough information on the provider, and enough time to take advantage of it, and atrocious otherwise. That's not the sort of system I want to have where I live.