Capitalism began its long attack on patriarchal family values in the same instant. As the knowledge process exploded to accomodate this new political economy, children stayed in formal schooling longer and longer. And in every era became ever more economic liability. Family values centered around large families became family values centered around small families. Extended families were no longer the basis of human intimacy.
Extended families become economic liabilities in labor markets.
Why hire family when strangers can be laid off or fired. Why hire family when strangers can be exploited and super-exploited in ways friends and family cannot. Women who bore eight, ten, twelve or more children become the target of mild amusement in factory towns and city shops as urban life displaced rural life. As industrial capitalism displaced family systems of production and distribution in goods, services and foods, property rights within the family became moot. There was no landed property to own or to inherit and very little personal property to transmit.