I think it’s coming pretty fast. There’s already a mod for Skyrim that lets you talk to your companion. People are spending hours talking to llms and roleplaying, the first triple A game to incorporate it is going to bee a massive hit imo. I’m actually surprised no one’s been coming out with visual novels using them, it seems like a perfect use case.
It’s definitely going to be used first for making the content of the game like you said though.