The richest (and fun) people I know own their own business. Most of them were horrible in school but really social.
Sales = money.
Academics + no social skills = no money.
Slice it and dice it no matter what industry you go into you have to bring in business which requires you to be likeable. Law firm Partner? Have a book of business. Managing Director in Consulting? Better be good with people. Own business? Sign up accounts. Any consultative sales big money role - ditto.
So I would worry less about academics and more about social and EQ intelligence in general. I also would say - Us rather be lucky than good any day!
My relatives all are Ivy undergrad and grad. They are all fine money wise but none are loaded. All did phenomenal in school. Doctors and Finance are the 2 high paying professions that require a solid academic foundation but the richest Dr in my family of many Dr went to the worst med school of all and had the worst grades of all. He is however very ambitious and good with people and decided to specialize. He took what he earned and started a number of medical based businesses and investments to leverage his medical background.
So you see - worry more about your kid without friends than your kid who isn't academically inclined. The most important thing however is desire. They need to want to be successful however they define that. Otherwise it doesn't matter where they go to college!