What are 10 things that billionaires have in common? They all have over $1B by definition. They all likely own more than 1 home. They all likely are on at least wife #2. They all likely carry a premium credit card like black Amex or JPMorgan card. They all likely made the money by building real value. Many of them dropped out of college. They all likely own or use private air transportation. They all likely have been fired from at least 1 job. Most don't waste money on exotic car collections. Most do not use email or social media. Most don't wear a watch since they operate on their own time.