There is no requirement of perfection or frictionless interaction.
Actually there is. Even the first paragraph of Wikipedia makes this clear. A free market arises when market transactions are unregulated, theoretically allowing price to be set by supply and demand.[1] Free markets contrast with controlled markets in which prices, supply or demand is directly controlled. Various economic theories require specific properties of free markets, for example, a perfect market with perfect information and perfect competition. Regulation which does not affect these specific properties can be in place without disqualifying the market as being "free", freely operating under the forces of supply and demand. http://en.wikipedia.org/wiki/Free_market
ps: please read up on real libertarianism, as defined in the rest of the world, and before american anarcho-capitalists hijacked the term. here's a good starting point:
No thanks. I do not see how you can have compulsory central planning and still call it a system of anarchy.
Anarchy is the absence of the state, not the absence of a government; that much has been well-acknowledged since the 19th century. On the matter of "libertarianism", as a matter of historical fact.. a) The first person to identify as a libertarian in the political sense was Joseph Dejacque, an anarcho-communist and signatory to the First International. b) The first periodical to identify with libertarian politics was "Le Libertaire, Journal du Mouvement social" which was a hot-bed of anarchist, socialist and communist thought. c) To this day in the United States, the first political organisation to use the named is the Libertarian Book Club, which distributes anarcho-syndalist and council communist texts. Hope this helps, Lev