Why Steve Ballmer, a Microsoft Ex-CEO is Richer than Mukesh Ambani

Normally, employees (incl CEOs) are never billionaires. But former Microsoft CEO Steve Ballmer is an exception. He's worth $141 billion compared to Mukesh Ambani's $113 billion. And he didn't have a single MS share when he joined the company. How is he so rich? Because of a clause in his contract that opened the door to billions!