I do agree that this sounds reasonable, but I can't help but think about drug cartels and mafias that exist in our world. Why would malevolent organizations like these not form in an anarchy? And how would we deal with organizations like these without organizing ourselves? And once we organize ourselves... we are no longer really in an anarchy?

I really don't understand how an anarchy is supposed to work. Society and organization seems like a natural biproduct of evolution to me...