When AI approximates Machine Intelligence, then many online and computer-run RPGs will move towards actual RPG activity. Nonetheless, that will not replace the experience of 'being there,' any more than seeing a theatrical motion picture can replace the stage play.
Gary GygaxOutside of the mindless sitcoms that the networks thrive on, people able to think generally consider most entertainment is escape in one form or another.
Gary GygaxThere's a call to adventure. It's something in the inner psyche of humanity, particularly males.
Gary Gygax