Video games are not the initial motivation at all.

These world models are key for robotic and coherence in video generation.

Give a world model images of a factory, the robot now can simulate tasks and do the best result.

Give a world model images/context etc. and it can generate a coherent world for video generation.

What this world model system might be able to do for us in regards of gaming or virtual reality: Either simulate 'old' environments like the house of your grandparents (gaussian splatting but interactive) or potential new ones like a house, kitchen, remodeling.

It can also be a very interesting easy to approach VR environment were you can start building your world with voice. That would be very intentional. After all world building is not necessarily connected to being able to generate 3d assets. Just because you need to go this route today, doesn't mean you have to do this tomorrow.