The only way to get big returns is secrets, just like always. Insider trading has given way to insider investing or insider hiring, which is insidery just like always. The problem with the stock market is that it is too easy for people to invest in, relative to other options (private companies) where you are still welcome to (encouraged?) to learn about secrets. So people blindly buy indexes (past returns = future results somehow, even though by definition people are overvaluing whatever is in the bucket) instead of finding secrets.