Yes provided they are very very talented (Musk is an amazing engineer), a polymath, and extremely driven to the point that the money won't make them slack off.

Yes provided they are very very talented (Musk is an amazing engineer), a polymath, and extremely driven to the point that the money won't make them slack off. The thing about Musk is that he has a sense of mission beyond just money. So yeah, I think there are a decent number of people walking around who could do the sort of thing he does... maybe 1%-2% of the engineering profession if I had to guess. Why are there not more actual Musks? Because the skills and interests that get you rich are typically not these. They are skills like charisma, charm, social networking ability, etc.