The point the poster you responded to was making the point that Zuckerberg may be satisfied with just Facebook, whereas Larry and Sergey choose to pursue other ventures in addition to Google. The poster wasn't making a point about talent or luck.
Even with that, Zuckerberg isn't 100% focusing on the Facebook core product; look at the Connectivity Lab, for example.
Even with that, Zuckerberg isn't 100% focusing on the Facebook core product; look at the Connectivity Lab, for example.