These things are easy and popular to say, but what does it mean? Once you've killed off the billionaires, what about the hundreds of millionaires? The tens of millionaires? The millionaires? So on down the line. I've never read a practical, thoughtful response to this quandary.
It's really not as tricky as one thinks. Back when Eisenhauer was in charge and worrying about the very things all we "lefty commies" nowadays worry about- corporations and the weapons manufacturing industries taking over, they taxed people who made massive amounts of money 90% of their income. We never saw Americans flee the country then. Industry did very well. The middle class expanded and grew.
It's a very practical solution when you realize that most of the corruption in politics in America comes from billionaires trying to control the way a nation goes. Say goodbye to their disposable influence, and the corruption goes too.