That billion dollars had to come from somewhere, and it definitely didn't happen from a single individual's hard work. A lot of people were involved in that over a long period of time. It's also weird to attach an emotional term like "earned" to that. You can say someone passively earned income, or an investor earned a return on their investment. That's clearly not the same meaning AOC implies when she uses it. So, yea. I'm pretty sure Graham and AOC are both talking past each other.