If a ruler is one who has the legal claim to setting the “rules” of a given jurisdiction, then logically the property owner is a ruler over all that he owns. And further, if the ideal libertarian society can be described as a “Propertarian” society, that is, a society made up only of privately-owned property as opposed to “public” property, then it is essentially ruled by proper owners creating their rules and voluntary interacting with each other. The number of rulers in this society is not zero, in fact, it is hundreds or thousands or however big the society is! Ironically then, it is democracy and every other State structure which limits the number of rulers.
The point here is that there most certainly are rules in a capitalistic and strict property-rights order. The anarcho-capitalists should always remember this. It’s just that there is no state-originated rules. Thats the difference.
Recently, I read a similar statement by Mises Canada’s Editor in Chief James E. Miller, who wrote:
The issue is not necessarily the functionality of a hypothetical anarcho-capitalist society, but of definition. The etymology of anarchy is simple: the ancient Greek meaning is simply “without rulers.” Are so-called “rulers” necessary for capitalism? Yes and no, depending on one’s general understanding.
Private property itself needs rulers – that is the owners of the property themselves. The same goes for hierarchy. If a rentier owns land that people agree to live on, there is a clear distinction between who’s in charge.