Using 2009 is very problematic. It's when the SP 500 bottomed out. He picked the worse possible moment to measure rich people wealth in the past 40 years. I

Using 2009 is very problematic. It's when the SP 500 bottomed out. He picked the worse possible moment to measure rich people wealth in the past 40 years. I don't know his deal, but it's obvious that income inequality has been on the rise around the world the past 40 years.