Musk's companies are two of the very few exceptions to this universal empirical reality, and as such underscore the need to try and understand what makes them (SpaceX and Tesla) different, right down to the psychology of the executive team and founders. In my opinion, nothing is more important for the success of a company than the psychological foundations of the executive team and investors. They set the incentive structures, and their subordinates do their best to carry them out.
In most companies, the incentive structure is to get paid as much as possible by playing office politics. Hence, we get golden parachutes, "cost-centers", and an obsession with stock price and quarterly profits.