Yes, it certainly is. Only rich people that got relationships with different important personalities (like Zuckerberg) would be able to predict many things because they know the answers to different questions before we all do. They know when gold will rise or fall, about the future of stock market and many other things. For us, it's completely an unpredictable job. We can only predict for cases like the Brexit which made gold's price skyrocket.
It is called insider's knowledge or information and also one of the reasons the majority of traders are losing in the long term. When you have such knowledge about, for example, the affairs, operations, or financial status of a corporation, you can basically tell what the future price will be as well as the direction it will follow and thus either make profits or avoid losses. Since most other people are just guessing about future price (and solemnly call that technical analysis, lol), you can safely bet against them, thereby stripping these poor fellows off of their money, ultimately wiping their accounts clean...
Needless to say that insider information is commonly a criminal offense, but who actually cares?