I think it's more that he has a distaste for Facebook's "90's-Microsoft-esque" strategy of watching like a hawk for any potential competitors in the space, and going to them with a "either let us acquire you, or we will crush you" offer, and how successful that strategy has been so far. Most people have a vague sense, if only for aesthetic and "fairness" reasons, that we don't want the world to work like that. Unfortunately, the world doesn't care about our wants.
Don't be fooled by the showboating, behind every attempt at executing these aggressive strategies is a crumbling organization rife with disharmony and malcontent. They would not be focusing on what other companies were doing nearly this much if they did not feel threatened by it.
Yes, when your success relies on a monopoly or dominant position, your future is at stake if you don't use your dominant position to remove any competition that may chip at your domination.
This is exactly why monopoly are hurting everybody but the people profiting from it.
