Only one in ten thousand men achieve a rich status in life
Men , and women , blessed with these special genetic combination of intelligence and entrepreneurial courage ( such as Trump )tend to squander this blessing by marrying brainless bimbos.
This means that the special genes are not passed on and their offspring will end up squandering the wealth in one generation.
In some cultures such as mine this phenomenon was observed thousands of years ago and rich men are only allowed to marry rich brides no matter the looks
This tactic ensures the preservation , prolongement and increase of wealth for generations to come within the same family.
The same principle applies to ruling classes.
Rulers pass their genes and their job to the next generation
Such as English royals, Bushes and Clintons