They should work hard and try to predict future price trends. Then maybe they will make some money.
Predicting future price movements is a rather hard thing to do. Actually it's more or less impossible. If it was possible and they knew how to do it, they'd be best off just using that knowledge in order to do some traded on their own. Why would they give away their golden tickets to the public?
They needn't be 100% accurate... Analysts give out price targets on stocks all the time...