Quote from article: “At one point, Donald tells Steve Ballmer, ‘I’m curious about one thing,’ ” Samini recalls. “Ballmer said, ‘Of course, what’s the question?’ Donald looks at him and says, ‘You really have $2 billion?’ We all started cracking up, and Ballmer said, ‘Yes.’ Donald said, ‘You have $2 billion in cash?’ And Ballmer said, ‘Don’t worry, I have the money. I can call the bankers and they can verify the funds.’ Sterling starts laughing and he looks at him and goes, ‘That’s the stupidest thing I’ve ever heard in my life.’ Ballmer looks at him and says, ‘What do you mean?’ and Sterling says, ‘Why would anyone have $2 billion in cash? You should invest the money or pay off your debt. You’d be stupid to have that kind of cash.’ ”

Edit: Clarification, I'm sure they didn't mean $2 Billion in actual cold hard cash in a vault somewhere. But Sterling made it sound it's like that.