They are ambitious, have a strong work ethnic, believe anything is possible, determined, and thrive on being the exception to the rules or breaking them altogether. However most of they tend to have an entrepreneurial spirit.
Famous billionaire college drop outs - Larry Ellison (founder of Oracle Software), Michael Dell (founder of Dell Computers), Ted Turner (founder of CNN), Steve Jobs (founder of Apple Computers), Ralph Lauren (Fashion designer), Mark Zuckerberg (founder of Facebook), David Geffen (Music and film executive) Ty Warner (owner of Ty Inc. Beanie Babies). and Bill Gates (the richest man in the world and founder of Microsoft)
And then there are the many no name multi-millionaires who've built businesses in blue collar industries such as owning car washes, dry cleaners, parking lots, construction/contracting, and high commissioned sales careers of any industry. "Life coaches" like Tony Robbins and others who have built multi-million dollar businesses with books, DVDs, and workshops in the 'How to' industry.
However I believe what perplexes a lot of people is seeing people like Jay-Z, P. Diddy, and Magic Johnson accumulate $500 Million+ fortunes each with a sort of "Midas touch" proficiency. It's doubtful they would have scored very high on the SAT. Most people with college degrees and those without do not become millionaires. Intangibles make all the difference in the world.