Monopole

Chapter 10 expounds a completely new theory of monopoly—that monopoly can be meaningfully defined only as a grant of privilege by the State, and that a monopoly price can be attained only from such a grant. In short, there can be no monopoly or monopoly price on the free market.

Murray Rothbard, http://www.mises.org/rothbard/mes/preface.asp

http://www.catallaxia.org/sections.php?op=viewarticle&artid=293