And that's based on what evidence? Is there a single nation with a free market, regulation-free health care system that manages to cover >90% of it's citizens and remain affordable?
Some things are just not amenable to a free market approach, chief amongst them are services that people will literally die without. The most affordable and most effective system, as demonstrated by literally EVERY other first world nation (member of OECD) in the entire world, is a single payer gov't run system.
It's way past time for everyone to get off their ideological high horses and recognize this simple fact. Only one health care system has been demonstrated to do what we need it to do: It's single payer. Whether you like it or not we all need to get over it, stop this pointless bickering, and get on with it.