Alejandro Chafuen, president of the Atlas Economic Research Foundation, offers his thoughts about that question in this Forbes piece.
If you go the the site, you’ll find many other piece by Chafuen and a recent one I like especially is How Did He Get So Rich? That piece is about an old Argentinian friend of his who got rich through fraud. That piece reminds us that when talking about the “unfair distribution of wealth” the right question to ask is not “How much wealth does he have?” but “How did he get it?” Sadly, in our obsession with “fairness” we rarely ask the second question.