Perhaps we are talking past each other. What may matter here isn't the size of the org per-se, but the degree of overlap between one worker's connections and an

Perhaps we are talking past each other. What may matter here isn't the size of the org per-se, but the degree of overlap between one worker's connections and another's. People in a megalopolis don't necessarily have more or fewer connections per-se, but their connections are more widely distributed (often even close family members are globally scattered) and may not overlap at all with their neighbors'.