What is powerful? Being rich beyond belief, or being busy your entire life proving you are better than what your father said you were? In the Muskonomy makers are the powerful ones, those who decide what it is they are going to contribute to humanity, and then maintain a powerful focus on making it happen, until it is done.
And quite often, perfection is only a mirage that keeps people from just starting the process of creation, as they are afraid of making mistakes. If anything, Elon Musk has taught us that it is better to fail fast and correct, because failure is not a problem unless it is catastrophical, to the point where the company would go under. And he proved it again and again!