an anarchist
Your local loco.
A private individual would have the right to enforce his property rights if they are being violated.There are 2 commons. Common land and common resources like air and water and the critters living there. So by whom and how is the bold enforced?
Now we are getting somewhere.
In ancapistan, there would be access to private arbiters and enforcers, as you brought up.
The market is what would regulate the private law. A meta-police is not inevitable. Is it safe to assume that consumers would desire a “moral” private arbiter and enforcement agency? I think so. If an agency is practicing immorally, I think that would open up the market to more moral private law agencies, and consumers would funnel resources to them. So that’s who would pay for it. Through resource allocation, consumers do have immense influence on the services. If a private agency decided that they wanted to become a de facto state, every other agency as well as the consumers would have the motivation to oppose that. Through the market place, consumers can peacefully resist such an action.Then there is the problem of actual law enforcement. It has to be private police and courts, but there are several ones. So to stop them from infighting you need in effect a meta-police and courts. Who pays for that and who controls that and stop them from becoming a de facto state.