Aretae commentary: Monopoly is THE problem. Faster, please.
UPDATE: My favorite line:
The idea that it is essential for a nation to have a single legal system applying to everyone within its borders is, so far as I can tell, a modern one–there are non-Muslim examples as well of polylegal systems.
Does that mean we can get the formalists and reactionaries behind polycentric law?
UPDATE II. Really, read the whole comment thread, especially David Friedman's points. Should fix most people's confusions about law.