It's likely that at the time he'll become president, Facebook won't be significant anymore. That's probably what he's preparing for. He knows that his company w

It's likely that at the time he'll become president, Facebook won't be significant anymore. That's probably what he's preparing for. He knows that his company won't last very long (because historically very, very few companies did), he lays the groundwork to start as a politician once Facebook isn't anymore what it is today.