The reason is quite simple, because indeed when people do not take education or come from ordinary families, sometimes they are exposed to more because it is considered that their success is extraordinary compared to people who take education because they think it is a very natural thing because indeed they have an education that is very important. conditions in this stigma to be successful.
I only emphasized that having armed with proper or let us say formal education is always an advantage over people that didn't even managed to finish high school.
People with less or very little education became famous when they became successful because it is rare and not common. And if we really start talking about the most famous successful people then we will be talking about the richest people and top companies of today. And it is not hard for us to know that they are educated. Drop outs like Bill Gates, Facebook's Zuckerberg among others are also considered educated. Very educated upon knowing how high the standards of their universities.
Even though in this case there are positive things from education, when talking about opportunities now I think it depends on the wishes of everyone, regardless of education graduates or not.