Karen DeCoster beats me to something I had on my list. Yea, Warren Buffett is worried that not stealing a major portion of a person’s estate from their chosen heirs (often forcing them to liquidate cherished or income-producing assets in order to pay taxes) might result in a plutocracy; you know, like you might have one of the top rich people in the country fly in from Omaha, or something, and try to use his wealth status to influence public policy that he himself is largely immune from, but which adversely effects large swaths of people of lesser wealth.

Something like that.