"Anarcho"-capitalism support landlordism. A system like that will end in something like a private government as is mentioned in the text
Discussion
The text is wrong. These private police forces were 'granted' by the state for some major corporations, which is fascism and doesn't allow competing specialised protection companies. Obviously fascism is worse than just statism.
That's exactly the point of the article, these kind of private police enforcing landlord rules won't bring any freedom to the people, it'll just create a different kind of state like a neofeudalism