I take the whole 'buy floating island nation' thingy as just a stalling tactic. I'm reasonably sure there's a plot of land somewhere out there which could be bought with an agreement to be free from all state interference. Of course that freedom would include freedom from the pesky burden of the state defending the property rights, so...
In practice, of course, even libertarian paradises would have laws. And means for changing and enforcing those laws. And an evolving concept of just what the community wants. Ultimately I suppose some hybrid of Lord of the Flies and Gated Community in Irvine, CA, would emerge and then, you know, collapse. Maybe it's what happened to the "lost colony" of Roanoke.
