This is an old piece by a left-anarchist from probably the early 2000s discussing the differences between left-anarchist economics and anarcho-capitalism. It’s a bit sectarian leftist, as might be predicted, but some of the discussion of economic concepts is interesting.
The most obvious weakness of this piece is its fanatical universalism:
Given that anarchism (what he calls “left-anarchism”) aims to create a social revolution from below, after which people would create communities based on their own preferences, then he simply is saying that anarchists are just anarchists.
The difference between anarchists and “anarcho”-capitalists is, of course, how they view communities so formed. For the anarchist, the nature of these communities determine whether they are anarchists, not their voluntary nature by themselves. After all, a community run on Fascist lines is hardly anarchist. Equally, the current system of competing nation states are also voluntary (no one forces Jeremy to life in the USA). That does not mean that the current system is anarchist.
Expecting every community, region, institution, or organization everywhere in the world to be organized along strict syndicalist or anarcho-communist lines is, well, rather unrealistic.
Jeremy Sapienza, an “anarcho”-capitalist, wrote an essay on anarcho-syndicalism. This is a reply to it and a critique of his main assumptions and arguments.