The business is now considered so mainstream that it is not just technology-related companies that are eager to jump on board -- global brands like Gillette and Coca-Cola are keen to get a piece of the action, too.

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And Gillette's products obviously have global appeal.

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Many highly effective global organizations, such as Coca-Cola and Gillette International, have strategies to actively build cultural agility.

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Alwaleed figured it was too big to fail and that Citi's brand name and worldwide presence made it a great way to play global growth -- much as Warren Buffett uses Coca-Cola, Gillette and Disney as proxies for international investing.

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