It is naive to think that only people with knowledge, education and degrees can make a lot of money and the rest cannot. In theory yes, but in reality, our world doesn't work that way. If we have knowledge but no courage, do not dare to take risks, then do not blame fate that we are not luckier than others. While those who know they are not good but still dare to take risks, step out of their comfort zone and dare to make trade-offs, the results will be completely different.
Not to mention, wealth sometimes comes from relationships, luck...this is not new and there have been many such cases. In short, wealth comes to us in many different ways, there is no single path or formula when it comes to wealth.
But in life, we cannot wait for luck to come to us because there is no guarantee. So instead, try to improve our knowledge, work hard, try to step out of our comfort zone...seek wealth and wealth will come to us.
The difference is that, billionaires could come out of anywhere, you could be a drop out, you could be smart, you could be educated, you could be anything if you just want to be a billionaire, because there are so many things involved about that. But if you just want to have a normal job, and want to live a comfortable life, as in like have a house, wife, two kids, a car, maybe even two, and send them to decent schools until college, that all comes down to a great education.
Harvard guys may not end up being billionaires all the time, but they sure can afford a house sometime during their life, and cars too. This is what we are talking about when we say education, you need to have education to be at that level, it helps at least.