Earlier quoted context omitted.
A true free market is when anyone should be allowed to practice medicine including your barber. That would give your regular doctor a run for their money and have them perform better that the barber. Similar goes for pharmaceuticals, a true free market does not exist.
This already exists and we know what the outcome of it is. It's alternative medicine. Insurers will gladly and gleefully let you do holistic woo bullshit because it saves them money. A 'free market' as you state just results in people falling for bullshit care.
No, you cannot prescribe mainstream drugs (some of it which are indeed useful) if you are not licensed. Cannot do surgery etc, either. All of it is 'illegal'.
>A 'free market' as you state just results in people falling for bullshit care.
True, what's different now?