by Eli Harman
You earn the protection of the rules by submitting to and abiding by the rules. Optionally: by helping to enforce the rules. I don’t think this last part is optional, although your help can be indirect (pay your taxes) rather than direct (militia service.)
Libertarians who say the rules just are, whether god-given, inalienable, natural, morally imperative, self-evident, or what have you, are just lying in order to try and obtain their protection at a discount.