Entrepreneurs who aren't Zuckerberg face bad times: Uber CEO
According to excerpts from a new book, Uber CEO Travis Kalanick once said, "When you're an entrepreneur, at least the 99% of entrepreneurs that are not Mark Zuckerberg, you have hard times." Kalanick said this while showing a bare section of his office and added,  "This...is what I call the cave...when you're going through hard times, you're in the dark."