If you havent done the homework, its rigged based on certain factors how they play it by.
Since most of the stuff is based on their own terms, like insider info, or something else thats off the books.
A normal trader going into the market using a thinkorswim account will get killed, not having a edge.
Insider trading is not the norm.
People do get prosecuted and go to jail for insider trading - think of Raj Rajaratnam and Rajat Gupta.
It is just not worth it for people in important positions to make use of insider information.