That of betting everything on horses is not a bad idea, but if it applies to horses it should bet for each sport, fútbol, basketball, baseball, whatever , as long as you bet with great measure , the AI can give us approximations , the Algorithms are not so perfect as to be able to appeal to having them as a whole, they have their flaws and they are looking for a way to improve them to have better results, what happens is that if that magic formula is found it will be total madness, because the people will want to have that AI to win and Platforms will Start to shut down in a measure to Protect Themselves.
We can makenuse of AI in many sport bettings but i don't think they were all best for this, let's look at the horse race bettings which has to be a live sport event onnan open field, how can the modification of AI be applicable in this kind of sport if not on other relevant areas it use can be applicable, also i believe that the use of AI can't be as accurate as expected in winning games but can enhance the user's experience in using them.
Same as other sports. An AI can always check the previous statistics of each horse based on its record online. Horse racing usually uses the same horse or producer in every race. But an AI has limited use in this kind of match because animals condition is very hard to rate compared to human players.
An AI can be applied to almost any sport as long as there's data available for analysis.