The CEO is your marketer-in-chief: (s)he's selling how good the company is to your stakeholders, clients, and even suppliers (want a better, big, deal? ask 'em to talk with your CEO).
CIOs are not trained for that.
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Riches: A gift from Heaven signifying, "This is my beloved son, in whom I am well pleased." -- John D. Rockefeller, (slander by Ambrose Bierce)