It works both ways.
Not very often.
American family-law is the vehicle for greatest wealth transfer in the history of humanity. 80% of divorces are filled by women who win custody and child support over 90% of the time. Often the reason for the divorce is simple the wife's boredom. It is a rare case where a man is awarded assets of his wife's individual labor, yet common for a woman to awarded the fruit of the husband's labor. The rise of the sugar daddy culture is a direct result of the profound social upheaval of feminism, its destruction of family and its slut equals independent doctrine.