When Muhtar Kent looks over the international giant that is the Coca-Cola Co., where he was named president and CEO in July, he sees a soft-drink empire spanning 203 countries — more than belong to the United Nations — and offering up an astounding 1.5 billion beverage servings daily. But the 56-year-old Turkish-American CEO doesn’t see the glass as even half-full. The glass he sees is more than 90% empty. “We … have just scratched the surface,” he said at a recent Wharton Leadership Lecture.  Those daily servings of Coca-Cola products are just “a portion of the more than 40 billion drinks that the world enjoys daily — so we have a less-than 10% share of the global hydration market.…