Based on personal experience I don't see communal societies scaling. When you have a small homogeneous group of individuals trust isn't a issue because people a

Based on personal experience I don't see communal societies scaling. When you have a small homogeneous group of individuals trust isn't a issue because people are bound by blood, culture, ethnicity and everyone knows each other intimately but for larger groups instead of a big family you have multiple groups fighting for power and resources. So unless the society have mechanisms to deal with it it's fated to fail. Our present societies have many in place: private property, courts arbitration, elected representatives, etc.