I would think that building a environment which can be managed by a game engine is the first pass. In a few years when we are able to render more than 60 seconds it could very well replace the game engine entirely by just rendering everything in realtime based on user interactions. The final phase is just prompts which turn directly into interactive games, maybe even multiplayer. When I see the progress we've made on things like DOOM, where it can infer the proper rendering of actions like firing weapons and even updating scores on hits and such it doesn't feel like we're very far off, a few years at most. For a game studio that could mean cutting out almost everything between keyboard and display, but for now just replacing the asset pipeline is huge.