But what would exist in this ideal "free" market? IMO, without contract law and courts that enforce it and persecute fraud, you can't have a functional market (free or unfree). Also, without some laws that monopolize violence, the market would be much more, well, violent (you might think of that as "free", but I don't think that kind of freedom is beneficial to the society) - we can see that in numerous places on Earth right now, where there is no effective "government" and you have multiple factions fighting for power - it rarely encourages trade and entrepreneurship.