I would add that "pure" Libertarianism is as unobtainable as "pure" communism or "pure" capitalism (free markets).  As a Libertarian I see the first "deregulation" accomplishment is changing the tax code to a "square deal" (Theodore Roosevelt) for all Americans.  That is where we need to start, a complete and comprehensive overhaul (local, state, and fed) of our tax system.  As a point of trivia, Franklin Roosevelt's "New Deal" is a play on 5th cousin Theodore's "square deal", see https://en.wikipedia.org/wiki/Square_Deal