I can. I live in New Zealand. Medical practice here is plenty regulated and complying with these regulations is a meaningful percentage of my day job. Not all of it is worthwhile, lots is.
It doesn't clear up why you think a free market and regulations are opposites.
Take a small market store selling product A and product B. Whichever sells more at a given price wins more profit, great. Free market forces are at work. But then (anything goes, after all) the manufacture for A comes in and says to the store owner: if you sell product B we'll firebomb your market and kill your dog. So then the small market stops selling product B. Now, the small market only sells product A and at a huge markup.
Is product A actually better? Does the consumer win?
Regulations are necessary so the manufacture of A can't do that and make sure that the market is actually free.