"To serve people" - is a far more attractive reason to be a CEO and a far more likely reason to succeed massively as a CEO. Most business books focus on the "how", but the "why" is critical for a CEO.
Money, power and prestige are byproducts and make very poor motivators in themselves. A CEO motivated by money, power and prestige (even those who naively pretend second order effects) will likely make suboptimal decisions.
"If anyone would be first, he must be last of all and servant of all."
I think 'power' here sounds negative (probably not intentionally), but remember with power comes the ability to make meaningful change and have a real impact.
