A bot is codded by a programmer to follow his/her commands and it will do whatever the developer coded into it. For example if a programmer need to automate a task like betting then he/she already has a working strategy that they have tested for many times, now they just create a code using a programming language, and give this bot access to their account. The bot will only bet if the requirements of the strategy are met otherwise it won't bet at all. This type of approach basically work to automate the tasks, but it could cause huge losses if anything goes wrong.
On the other hand, an AI is a type of software that works by learning a strategy and getting good at it over time. For example a programmer is well aware of a working strategy that has a win rate of 50%, and the programmer doesn't have enough time to improve their strategy, in such case a programmer makes an AI software that will test the strategy by betting many times, and with each success the AI will get a reward, and with each failure the AI will get a punishment. This type of learning is known as Reinforcement learning, and it could really be useful when AI is trained for more than 10000's of bets, and still it won't be 100% accurate because the casino can change their Algorithm anytime, and the AI has to go through the same training process once again.
So AI can learn for itself from what they are facing that AI can know the approximate steps to be taken by its opponent. At least, that's what I thought so far, but given the current state of affairs, AI hasn't reached that level yet and still needs further development. And besides that, the developers are still trying to test the progress of each update so they can see how far the AI can work. And if that becomes a reality, the competition between AI and the casinos will get tougher, and we'll see whose AI wins more often. But the casino's AI will be the winner because the casino is the owner and doesn't want to lose much money to gamblers. Quite the contrary, casinos want to take as much money from gamblers as possible.
We can always drive to the principle that house always have the edge against the gamblers, if both side will utilize the use of AI then surely it's the house will win in the long run, might possible that a big whales will invest to maximize the use of the system, but house will counter that and all those small-time gamblers will be affected of such adjustments.
Casino owners will find ways to continue business and not to be something like a cash atm of every gambler who will use AI
to take that edge and keep withdrawing from the house.