The link to the source of the data was broken and I didn't search around but I was curious how they defined inherited. To be in this class, did they have to inherit a billion dollars? A million? Come from upper middle class? If close to 30 percent are inheriting upwards of a billion, that is a lot.
And look at Russia, yikes! Shows a deep corruption. How that country doesn't devolve into a Venezuela/Liberia/take-your-pick, I do not know