@oldfort, all I can say is that you don’t seem to know what you don’t know.
Of the top 1% who didn’t inherit their wealth, a big chunk are small business owners from all sorts of educational backgrounds. Another big chunk are doctors/lawyers and attending an elite undergraduate institution certainly isn’t required to become a doctor or to go to a top law school. Then you have CEO’s/upper management of big companies, and while some have elite undergrad pedigrees, many do not.
Here is a breakdown:
https://www.economist.com/node/21543178