note the keyword. Think there's tons of them around your city looking for people to give them money? Nope. For every skilled investor, there's 100 newbies doing it themselves or finding a con artist (read: madoff).
low risk = low return
high risk = high return
That formula hasn't changed in decades. But hey, if you got a formula for low risk, average/high returns - i'm all ears.
c
That forumula isn't exactly true, either. More concisely -- and more generally -- risk is defined as variability of returns, which means a much different thing. (The proof is left as an exercise to the reader.)
Maybe that's something that's easier to pick up with a quant background... you just see people throwing around rules or "equations" that are at best only true sometimes (e.g., Newtonian laws, F = ma), and at worse, patently false (e.g., Einstein's E = mc^2).
Since when is a person like you against making money off of naive newbies who will buy your (financial) product for more than you bought it for?
Some biologist dood said that if you tug on a single string in nature, you will fine it attached to the rest of the world... this is probably more true of finance and other highly integrated human activities than you would like to think...