This is somewhat interesting, but relies on the all too common tautological device of "hustle," a quasi-magical activity whose details are usually elided over. Start a small company. "Hustle" diligently for a while. Profit. Repeat. Now you have a large, successful company. What makes a successful company? "Hustle." What is "hustle"? Why, it just means "working hard at doing all the things that make a company successf…
And, also, survivor bias. Lots of companies hustled and hustled and died.
Elon Musk is a really good example. At one point he couldn't meet cashflow--and then the government contract for SpaceX finally came in.
3 months of delay on that contract and Musk is a goat instead of a hero.