An executive beat Bill Gates at a game 35/37 times. When they met again, Gates had studied the game and beat him every single time!
From Microsoft's founding in 1975 until 2006, Gates had primary responsibility for the company's product strategy. He aggressively broadened the company's range of products, and wherever Microsoft achieved a dominant position he vigorously defended it.
He gained a reputation for being distant to others; as early as 1981 an industry executive complained in public that "Gates is notorious for not being reachable by phone and for not returning phone calls."
Another executive recalled that after he showed Gates a video game and defeated him 35 of 37 times. When they met again a month later Gates "won or tied every game. He had studied the game until he solved it. That is a competitor."