Charles Koch falls in the bin of "earns more on their wealth during that time." There is another bin that is "paid for brand-building advertisement." - i.e. ce

Charles Koch falls in the bin of "earns more on their wealth during that time." There is another bin that is "paid for brand-building advertisement." - i.e. celebrities. The proposition is that ex-government officials are just getting paid market rate for her knowledge and insight. If that's the case, it should be trivially easy to find non government officials people getting paid $300k a speech for their knowledge. You've identified listings - which is better than I thought there would be ! - but not sales. Yellen earned $7.2m in two years. If all three of those combined earned half as much in speaking fees over that same time, I'd be definitely convinced that it's ho-hum