Another factor, but not all. Is huge fund managers are compensated based on the the size of the fund (a certain percentage). If they make an industry acceptable return and it could happen as early as one month, why would they want to take further risks and jeopardise their management gig?
Think of it as a football coach who consistently has an 7-5 or 8-4 season. He has a long career as a football coach because he never has a losing season. Why would he risk going for 4th down and one, when he can punt and still end-up 7-5 or 8-4.
Most people who decide to trade, know there is more to it than just 10% returns. What they don't know, is whether they can do it or not, and most can't.
Think of it as a football coach who consistently has an 7-5 or 8-4 season. He has a long career as a football coach because he never has a losing season. Why would he risk going for 4th down and one, when he can punt and still end-up 7-5 or 8-4.
Most people who decide to trade, know there is more to it than just 10% returns. What they don't know, is whether they can do it or not, and most can't.