I think that a government is necessary because of the essential selfishness most people have. I think that people would attempt to create governments because that gave them power. These would not be evil people, they might be people trying to make their 'tribe' better. I'm going to write a little scenario because I think that makes explanation easier.
Scene: For some reason Britain has got rid of it's government and is now functioning as an anarchist state.
An excellent speaker in the small town of Matting persuades the people there to share their supplies with one another and eventually persuades the town to use only the farms and river nearby for food, thus making the town self sufficient. After this (s)he persuades the people to do other things, for example everyone agrees to support the teachers at the local school so that they can keep the schools free.
After a while this character is so well liked and politically powerful that they are effectively mayor. They control the town, people don't have to do what (s)he says, but they do because this person can persuade other people to cut you out of society.
They are the leader, they can pass laws etc. Mayhap they persuade people to form a government of their own so that they can see the good works that have been achieved maintained.
What I am trying to say in a rather long-winded way is that people want order, in some places law and government will pop up again, not all, but some.
These areas will be better organized, they may even become warlike.
You mean "peasants", HorizonTal