Ok, so you defend an absolutist conception of free-trade that even his first theoretician did not think about. In Wealth of Nations (1776), Adam Smith did not defend this total freedom of economic individuals in a State of Nature without law but the law of the strongest. The rule of Law and the society remain, even with the invisible hand.
He theorized free-trade as very limited (but not complete) non-intervention of the States in the economy. At least, in this conception of free-trade, the State has the duty to maintain the conditions of this free-trade, which can mean anti-trust laws for instance.