"Free market" is a fine term. People just forget about the "market" part.

A "market" isn't some natural emergent property of the physical or social world. They aren't formed by, like, volcanoes. A market, historically, is a space defined deliberately by a governing body where traders are allowed to participate and where trade is allowed to occur under a given set of rules.

It's suposed to be a free market, not a free anything-goes-chaos-and-anarchy.