The difference is, nasty, lazy people in real life get other people killed, hurt, or imprisoned. There's a huge difference between various interpretations of "human rights" and the size of battery you put in your latest dongle. The benefit of founding principles and a centralized system is consistency and reliability. Unless AnCap or p2pgov can meet or exceed that benefit, it will never work.
You didn't read that wiki article, did you? I can tell because you still don't think AnCap has founding principles.
Murray Rothbard does a fine job of explaining it, so I'll let him:
"No one may threaten or commit violence ('aggress') against another man's person or property. Violence may be employed only against the man who commits such violence; that is, only defensively against the aggressive violence of another. In short, no violence may be employed against a nonaggressor. Here is the fundamental rule from which can be deduced the entire corpus of libertarian theory."
If that ain't consistent, I don't know what is.