Earlier quoted context omitted.
I don't have an answer off the top of my head, but I did some searching for you. A short article from inequality.org [1] suggests that most of the richest people in the world (Forbes 400) were born with significant financial advantages, if they weren't already wealthy. Since there are many more rich people than the Forbes 400, that doesn't seem too representative of the usual rich person. It's hard to find anything c…
Those “born on first base” — in upper-class families, with inheritances up to $1 million — make up 22 percent of the 400. [1] I wouldn’t call 22% of the richest 400 people in the world having inherited more than $1M to be evidence inheritance dominates the causes of inequity. I mean, another way to put it is “80% of the richest people in the world DID NOT inherit their wealth.” [1] https://ips-dc.org/the_self-made_ha…
22% received support and inherited up to a million, and a further 40% inherited at least a million - more than a lifetime's worth of income.
People outside these categories included those whose parents ran a successful business.