Well, that brings up an interesting nuance in definitions, there. "Free" is often taken to mean free of government intervention. But clearly, in most cases, it doesn't mean free of ANY intervention and regulation... so no market is "free" in the sense that it exists completely unencumbered... basically as a giant free-for-all with no rules whatsoever. Which — to me — means that "free" market aren't even a thing.
So we get back to what you are getting at here (I think), namely that we need some sort of balance. Humans are too selfish, greedy and manipulative to work without some form of ground rules system. Without that, it would all just become a giant open brawl and "whoever has the biggest bazooka wins."