People who have competence find it easier to develop their business with brilliant ideas that are applied to business fields. Competence can not only be obtained through higher education, experience really helps someone to become an entrepreneur. Those who have experience have gone through the process through direct practice in the field, while those who study at the faculty only learn the theory.
But it would be better if we have both, educated and experienced. Because theory is sometimes also important so that we are fast in business endeavors. Yanga, in essence, a successful person does not need a lot of theory, but is smart and good at looking for opportunities. He will "hire" smart and diligent people to add to his success.
You are totally wrong on the part that 'educated people tend to be introverted' and 'uneducated people tend to be extroverted' there is no single study that proof that, and I know a lot of highly educated people with amazing social skill. Education never determine social skills, a professor could be very extrovert and easy to mingle, and someone who never graduated high school could be very shy and not very talkative, it could also be the opposite.
And I can assure you that most of the people who earn a lot of money has higher education than most of people who earn less, you can read it here
https://research.stlouisfed.org/publications/page1-econ/2017/01/03/education-income-and-wealth