A very interesting article indeed. Not much new, though. I am curious, though .. many co-founders with very successful exits make the top 0.05% or 0.01% in terms of networth, but they're new money. They're not part of the 0.01% closed circle. What happens to them, usually? Are they accepted into the 0.01% circle once they've made enough money to afford it, or are they treated like a wealthier bottom half of the top 1%?

And for the wealthy people who have pledged 50%+ of their wealth to charity - where do they fall in all this classification?