Cook scaled up the iPhone (and its broad ecosystem, which includes the iPad, iWatch, iServices), maximizing its global potential. I don't know if it qualifies

Cook scaled up the iPhone (and its broad ecosystem, which includes the iPad, iWatch, iServices), maximizing its global potential. I don't know if it qualifies as genius, however it's plainly obvious that Cook is an exceptionally competent manager and logistician. He has also been a stable hand on an increasingly sprawling behemoth that easily could have gotten out of hand (~$400 billion in operating profit every five years - in the wrong management hands that's a disaster waiting to happen). He's successfully operating a mass consumer product company with the profit of Saudi Aramco, a once unthinkable outcome (Aramco used to tower over the profit of most every other corporation globally). Ten years ago Microsoft was one of the few global profit giants with ~$20b in annual profit; Apple is near six times that scale now. Cook has done a relatively good job of keeping a leash on Apple's financial behavior.