if we assume that that AI is correct from its prediction. I could imagine that many casinos will cease their operation, for they no longer make money. But as we understand prediction, it means that it was not 100% right.

For some instances, AI could be right, but not all the time. I still believe in the fact that gambling is unpredictable, and what's been shown from the video is just a coincidence. I only just believe that AI technology is right when it gets 10 out of 10 from all its predictions, or even just 8/10.