An idea along these lines is that of the Honduran ZEDEs: http://fee.org/the_freeman/detail/startup-city-redux http://fee.org/the_freeman/detail/startup-city-red

An idea along these lines is that of the Honduran ZEDEs: http://fee.org/the_freeman/detail/startup-city-redux http://fee.org/the_freeman/detail/startup-city-redux (I'd link to a less ideological source but libertarians and their fellow travelers are the ones giving them the most comprehensive coverage and the Wikipedia article is atrocious.)