Members of a mafia also work together. In a society without any absolute centralised power, mafia groups are free to dominate because they'll have the means of

Members of a mafia also work together. In a society without any absolute centralised power, mafia groups are free to dominate because they'll have the means of enforcing their views whenever disagreements come up. In a society without any centralised power, violence becomes a very effective tool to gain leverage over your adversaries.