Still have to be good at hiring those people that are good at hiring. And giving them the funding, culture and vision to succeed.
I think that his unique talents are not in engineering but sales. He's great at selling his vision to some people who will then bleed for him. He's great at fundraising and convince people to fund his ventures.
I don't think he's an engineering prodigy like Carmack or Wozniak. I don't think he's a product genius like Jobs. I think he's a fantastic salesman who finds bets that will pay off if you can keep at them for long enough, and uses his fundraising talents to keep his companies afloat until they do pay off.