I disagree strongly about curriculum. Just to give an example, here is an exerpt about the language curriculum at Eton from a modern (90s) graduate:
"Everyone must learn Latin and French for the first two years. Most boys have studied Latin and French for a couple of years before they arrive at the school. The cleverer boys also do Ancient Greek. There are many more languages offered besides these ones. The additional foreign languages are Russian, Spanish, German. Chinese, Japanese, Italian and Arabic. Those who are not good at languages need do only French and Latin." - Calers (1)
To me this is just one of a myriad of examples that highlight the kind of difference in actual education curriculum between the oligarchs and the rest of us. I would argue much of this is about quality of life instead of "success outcomes", and generally about having a strong liberal arts background being a key component of ANY education worth anything. Which is also why I strongly disagree with those who advocate for sending students straight to vocational schools, and that whole general line of reasoning, for example.
How many of your referenced founders and investors knew Latin and French before the age of 13?
1. https://gcalers.wordpress.com/2014/11/06/what-makes-eton-so-...