Families tend to dissipate wealth. The Rockefellers have long since dropped away in wealth, for example. So have the Kennedys. Corporations are owned by shareh

Families tend to dissipate wealth. The Rockefellers have long since dropped away in wealth, for example. So have the Kennedys. Corporations are owned by shareholders, who die and pass their wealth on to the government, family, and various charities.