Wouldn't the trend towards fewer children and smaller families decrease the dissipative effect? In the extreme case of a "one child" policy, inheritance would

Wouldn't the trend towards fewer children and smaller families decrease the dissipative effect? In the extreme case of a "one child" policy, inheritance would be amplified because the wealth of both parents (and presumably four sets of grandparents) would flow to a single individual. Similar to assortive mating, if wealthier families had fewer children relative to poorer families, then this would worsen inequality over time.