Henry’s post linking to Charlie Stross reminded me of one I was planning to do on the question – why has there never been a serious attempt at a real libertarian utopia? Most other utopian ideologies have inspired at least someone to attempt a practical implementation. On the face of it, libertarianism seems ideally suited to the belief in a fresh start, with no messy pre-existing claims. All sorts of ideas have been floated – island buyouts, sea-steading, co-ordinated moves to New Hampshire and so on, but none has gone anywhere. The only explanation I’ve seen, that libertarians are too independent and ornery to organise a utopia doesn’t convince me.
Thinking about the discussion we had though, it strikes me that there is a simple explanation: Actually Existing Libertarianism (see below) offers a better economic deal for nearly all libertarians than any feasible version of Galt’s Gulch. Once you do the math on going Galt, it’s not hard to see why no self-respecting libertarian would actually do it.