Comment by p-sharma

I think the main factor is being already rich or being born into a rich/influential family. A lot of problems startups have suddenly disappear when you can ask your dad for a small loan of 1 million dollars or ask your mum for a meeting with the chairman of IBM. Not saying this is the only factor but this "Great Filter" that weeds out those who don't have money or contacts helps others to develop their business with less competition.