Yeah wtf! I thought this was a great "Ken M"-style troll, well done really. But this guy being serious makes this absurd.

He is a pusher, but his enablers are more like major casinos, sports organizations, etc. He is a dealer high on his own supply

Bro you just explained crypto 2021

yeah, however these types of jobs have existed for a long time. That is what Nate Silver of 538 did before doing what he does now. He might still do it too, don't know though. So, I assume, they have contracts and other methods of mitigating that conflict. I also assume that clients/employers do what they can to know if someone like him is trying to fuck them over. There are probably some pretty nasty consequences for getting caught too. I doubt they can ever get rid of all risk but, if the person is good, I imagine the risk benefit analysis falls into the favor of using people like him. You will find these types of entities scouting university math departments, especially statistics majors.

If there is a way to make money there will be a industry made for it. If there is an industry for something there will be consultants for the businesses in the industry.