The anthropology of societies can be fascinating, to be sure.

Somewhere in there, it seems almost inevitable that we will run into someone(s) who throw up their hands and declare "I'm tired of doing everything myself, and being responsible for everything myself" and they want to abdicate that personal accountability to someone else. or something else. And then we suddenly have some form of "government" to deal with.

You are undoubtedly far more learned on the topic than I, but I'm inclined to think there is a different between having some kind of "structured collective leadership" and actual governments with all their pitfalls. I don't know, mind you.