great successes were due to the fact that they overcame fear, even knowing that they had a great% of failure and it is interesting to see this type of success because when they achieve it the reward is really enormous, if you look at Elon Musk he was about to fail with Space X and he only had a budget left to launch one more rocket, at that point he had already compromised even part of Tesla, because we already know what happened next and where he is now!