Arguably the unspoken social contract of Culture is how the real power and means of production are shared by all. We're seeing Culture at the point where they

Arguably the unspoken social contract of Culture is how the real power and means of production are shared by all. We're seeing Culture at the point where they deliberately curtailed what's considered normal evolutionary path of civilisation, but several times it's mentioned that when Culture turned independent, Minds weren't "like Gods, on the far side", but the core argument behind the breakaway was that the groups that formed Culture figured free redistribution combined with some significant resourcing models allowed them to "disengage" from capitalism and warfare related to their parent societes.