This is a common fallacy. Modern businesses are enormous and succeed or fail for all sorts of reasons. Trying to figure out who is actually responsible for the success of a company is difficult. Just because a company is successful, doesn't mean every employee of the company is great. It's essential to understand what the dynamics of an industry is in order to understand why a company is successful. In the case of SpaceX there's no doubt there are some people there who are great engineers. But that's probably not why they beat Boeing.