Earlier quoted context omitted.
You're focused on the actions rather than the results. Common mistake. People become leaders by creating and commanding change that positively affects the company. Land a major deal or create a new product line that doubles revenue? You're getting to the top. Working harder than the others is part of this process, and sometimes that means you come in at 5am, but it's not a requirement nor is it something that anyone…
I would disagree and say that Elon Musk has repeatedly cited working twice as hard as everyone else as the key to his success. But the trick he seems to be following is that if you work flat-out on difficult problems until exhaustion, you spend a lot of time in flow state and consequently learn a lot faster than someone who isn't pushing themselves.
You can credit him and his cohorts for having the foresight to work on products/services that turned out to be winners, especially given that he's followed that success with other potentially successful ventures. But I don't buy that work alone got Musk where he is.