OTOH, he had the power to make them play nice. From Isaacson's book: he closely controlled all of his teams and pushed them to work as one cohesive and flexibl

OTOH, he had the power to make them play nice. From Isaacson's book: he closely controlled all of his teams and pushed them to work as one cohesive and flexible company, with one profit-and-loss bottom line. “We don’t have ‘divisions’ with their own P&L,” said Tim Cook. “We run one P&L for the company.”