I'm not aware of any countries where there exists a "pure" free market. While there is plenty written on the theory of enforcing laws and property rights sans government, I think it a stretch even with a government run court system, to refer to a court's ruling in behalf of property rights as "central planning". Even calling such a ruling "government regulation" seems pretty far from what most would consider "regulation".
> I'm not aware of any countries where there exists a "pure" free market.
Unicorns are also pretty awesome - unfortunately, they seem to suffer from the fatal defect of there not being even a single instance of such a thing in consensual reality.
By definition everything was once a "unicorn" before the resources, demand and labor were mixed into developing it. Everything must originate as a idea before it can become praxis. Modern capitalism itself was a unicorn as recently as the 18th century, but it emerged nevertheless.