Not going to happen.
Now that artists are being threatened by it, suddenly imagining or discussing any practical application of AI is becoming something HIGHLY IMMORAL and comparable to intellectual theft and "lack of empathy", according to social media.
Fun fact: GPT works basically on the same principles of A.I. art (Dall-E 2, Midjourney, etc) except applied to language rather than visual output, so in the very moment you embrace the idea that the latter is "stealing proper artists work without giving them credit", the same should immediately become true for the former, "plagiarizing the ideas and words of writers".
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Anyway, back to the "what if": The interesting thing is that there are several techs that are quickly converging, here.
- Chatbots that are quickly getting better at sustaining conversations that resemble a human level of internal coherence (they are bit lacking in keeping in mind context on the long run and get easily sidetracked, but I'd bet it's a matter of "few papers down the line").
- speech synthesizers that are becoming increasingly better at imitating human emotional range
- "Artist" software that can easily extrapolate pictorial portraits starting from a 3D model or random picture
- A.I. driven physical and visual simulations that are order of magnitude more efficient than traditional code in terms of computational power required
etc, etc.
In theory barely a decade or two down the line you could have a game with a "procedurally generated world" (as we have plenty today) but where the generated content can maintain a level of diversity/quality incomparable to the current ones.
FOr the sake of this example, let's say an open world RPG, where the scenario is generated on the spot, every NPC would be able to more or less have a free form conversation with the player (voice-driven through a microphone, too), their human-like features wouldn't need to be custom-made, they all could get their little custom painted portrait in a corner (if you want it to be a feature), all their lines would be voiced by AI, etc, etc.