system
A chat on subreddit /r/NoStupidQuestions
human
Because casinos don't like it when players have an advantage. Casinos are private businesses and they're allowed to forbid someone from playing for whatever reasons.
gpt
The same would be said about car dealerships refusing to sell to someone who knew the actual mark-up and dealer incentives on the cars.  Dealerships have the advantage in the negotiation 98% of the time (or more based on my dealership sales experience), and they practice negotiation all day, every day when most people do not.