Sorry Clbck, i musnt have see ur question earlier. In this supposed Anarchyville it would function much the same as commercial society. the people will watch the watchmen, and the people will be watched by the other people. In essence everyone prevents everyone else from getting out of line and trying to take over (if thats what your getting at).
Ill give you a smaller example, a small anecdote if you will; 10 people on a desert island, one of them has a knife and is designated to protect them from wild animals. 3 of the others are gatherers, 3 hunters and 2 builders. The protector decides one day that he has the knife so he should be in charge, and so he threatens the others and says he will kill them if they dont follow his orders. And so they feed him poison and he dies, or the zerg rush him and he dies, or they just refuse to follow his orders. Assuming that he isnt mentally derranged he will realise that by controlling them unwillingly he will encite their anger, and so they will retaliate, and he cant watch them all at the same time, and also that he doesnt have a chance if they decide to zerghim, and also that by killing them all he gains nothing, and loses almost all chance of survival. Obviously this is only a small example, but i think you can imagine the kind of effects i refer to on a larger scale. That is, assassination, rebelion, and refusal.