What he is basically trying to say is that your chances of achieving "success" or "making an impact" is better if you work for Mark Zuckerberg than try to become (someone like)Mark Zuckerberg.

Wow what a narrow definition of success!For example by working for facebook how can I get every child in third world countries to get a decent education?How can I get every woman in rural india to break free from male dominance?

My respect for Parker just took a strong hit!