There are 2 problems to that. First seeing how much it costs OpenAI to run their infrastructure, that rockstar will have a one time payment for the game and no

There are 2 problems to that. First seeing how much it costs OpenAI to run their infrastructure, that rockstar will have a one time payment for the game and not a subscription from the players, and that you will have maybe 50-100 query per hour per player, it would not be feasible economically. Second even if it was, that mean that the whole game depends on an internet connection and a backend that will need to be here forever. 10 years later they cut the backend you can’t play the game anymore.