#4. Scott Duncan
Company: Enterprise Product Partners
Estimated net worth: $5.3 billion
Scott Duncan is living proof that you don’t have to be a Silicon Valley tech wizard to be in the billionaire club these days. The golden spooner inherited his father’s astronomically successful energy pipeline company in 2010, alongside his three sisters. And you bet they’re billionaires, too.
The Houston-based big game hunter may have grown up rich, but his entrepreneur father, Dan Duncan, hailed from humble beginnings. The son of an impoverished farmer, he launched Enterprise with $10,000 and two propane trucks. From there, he slowly, steadily amassed a monumental oil and gas fortune that his children reap the benefits of today. Source