Insider info is not that difficult to get and financial markets have become easier then ever before to make money.
A lot people use just insider info to make money there is not really analytics but even with the lowest IQ and without any degrees or education at all you can just make money If you got insider info and many even uneducated without any education at all doing that.
There is very strict punishment for this in many countries including USA. I know a case where a multimillionaire was punished for this, so they do not spare anyone. But in some countries , a lot of people do this and make a lot of money. We should avoid thinking about this because we might be influenced to do wrong thing because of seeing the profit.