As that wiki link points out, wealth isn't entirely public or measurable; so the list isn't complete. It explicitly excludes dictators and royalty (so, hey, saudi family!), and " excluding and ranking against those with wealth that is not able to be completely ascertained"
That makes perfect sense of course; but all those excluded parties from that ranking still need to manage wealth, so getting exact or even estimated numbers here is going to be tricky. And then there's the family != person disconnect - although it seems to me that most people in this situation got lucky somehow, so it's rather unlikely there are multiple original sources of wealth in such families. If there are several individually wealthy family members it's probably more likely due to dilution.
But yeah, you'd assume the median family wealth of a the top 0.001% of people is likely below 1 billion. But how much? Who knows.
> If there are several individually wealthy family members it's probably more likely due to dilution.
While this is probably true in general, there are at least two famous exceptions from Germany.
There is the notable case of Adolf "Adi" Dassler, founder of Adidas, and his older brother Rudolf Dassler, founder of Puma, who separated from their joined shoe manfucaturing business and independently built two of the largest shoe (and now sports equipment) manufacturing companies in the world. Both still headquartered in the tiny 23000 people city Herzognaurach, Germany (close to Nuremberg).
And the similar story of Karl and Theo Albrecht, founders of Aldi (Albrecht Discount), which was split in Aldi Nord (north) and Aldi Süd (south), both growing their company in billion dollar businesses and each becoming billionaires. Granted though they had slightly different styles of running their business, their success was based on the same innovative business idea and a geographic non-compete agreement.
In both of those instances, wasn’t there onebusiness that they split into two? That’s still one source of wealth. They just divided it earlier than death.
That makes perfect sense of course; but all those excluded parties from that ranking still need to manage wealth, so getting exact or even estimated numbers here is going to be tricky. And then there's the family != person disconnect - although it seems to me that most people in this situation got lucky somehow, so it's rather unlikely there are multiple original sources of wealth in such families. If there are several individually wealthy family members it's probably more likely due to dilution.
But yeah, you'd assume the median family wealth of a the top 0.001% of people is likely below 1 billion. But how much? Who knows.