the quick reports I've heard/seen for this all mention his Presidential runs and then mention that he was a billionaire, but Ross Perot did way cooler things and how he became a billionaire was pretty cool too imo
sold his first company to GM, sold his last company to Dell, like thirty years apart, both for over two billion dollars, he owned an original copy of the Magna Carta, personally kept Steve Jobs afloat inbetween Apple stints, personally kept the POW/MIA conspiracy theory government coverup opposition in business (which is what got him into politics), bankrolled projects that became the creation of e-books because he thought it'd be cool to read a book on a computer someday, pretty much bought the Dallas Mavericks for his son who ran it so badly they had to sell it to Mark Cuban, plus his whole presidential thing was borderline done on a dare from Larry King
his son also flew around the world in a helicopter in his early twenties, that was less dangerous than his Dallas Mavericks ownership