Private criminal courts. You run into the problem of legitimacy... What gives you the right to judge me? An accused criminal would say. A monarchy government would claim God, a democracy the will of the citizens... a private group of people paid by the accuser has the legitimacy of a hired lynch mob.
Discussion
Common Law with competition in the courts and security market
I'll watch it... but here is my question: In your system, what gives you the right to judge me?