

In all fairness. Machine learning in chess engines is actually pretty strong.
AlphaZero was developed by the artificial intelligence and research company DeepMind, which was acquired by Google. It is a computer program that reached a virtually unthinkable level of play using only reinforcement learning and self-play in order to train its neural networks. In other words, it was only given the rules of the game and then played against itself many millions of times (44 million games in the first nine hours, according to DeepMind).
I’m saying blackhat hackers can make far more money off the exploit by itself. I’ve seen far worse techniques being used to sell services for hundreds of dollars and the people behind those are making thousands. An example is the slow bruteforcing of blocked words on YouTube channel as they might have blocked their name, phone number, or address.
What you’re talking about is playing both sides, and that is just not worth doing for multiple reasons. It’s very obvious when somebody is doing that. People don’t just find the same exploit at the same time in years old software.