And just out of curiosity, why does no society on earth actually have that?
For those new to this:
"
Anarcho-capitalism is a fringe political ideology that prioritizes the freedom of the individual from state coercion
[3] and advocates market-based solutions to all social needs.
[4] Anarcho-capitalists believe that compulsory taxation is a violation of individual liberty, and thus believe that law enforcement, courts, and all security services should be provided by voluntarily-funded competitors, such as
mercenaries private defense agencies."
Anarcho-capitalism - RationalWiki