The dozen or plus successful books he’s written and ten billion dollars say different. One or mor of the books are required reading in many of top business schools
He is not worth $10 billion.
He probably is only worth around $4 billion, because part of what he claims is undeveloped space, space under construction but not yet rented, and “good will.” Still that is plenty, and having read one of his books about 30 years ago, I have done reasonably well with real estate and actually have more net worth than several Presidential candidates, while never having held a job that paid more than $23,000. Of course, buying thrift store clothes and driving a 1990s car helps too.