The thing here is that when you are doing anything worth doing, you can do it on your own and hope that your little security blanket that you've managed to patch together, will sustain you. Or you can find people that have done something, follow them and their leadership and own 5% Amazon...
...The same happens in real life all the time. Sure people like Steve Jobs, Gandhi, Martin Luther King Jr., and others had demonstrated incredible courage, but it was not without fear...
Warren Buffet was once asked at a shareholders meeting why he kept 20 billion dollars in the bank. It's not something that an investment company normally does so it's a legitimate question.