Tribal civilizations were like that? At some point humanity discovered that making parents "compete" who can raise their own kids the best, generated the best o

Tribal civilizations were like that? At some point humanity discovered that making parents "compete" who can raise their own kids the best, generated the best outcome overall. "A dog with two masters will starve." OTOH the competition must be complemented with cooperation, because it is not good to be king of a devastated hill. People want their children to beat the average but the average should be also good.