What is the point of this vs cheap robotic arm simulations?
The only place I see this applicable is for visual artists prototyping
You could produce a thousand cheap ads for your product or one expensive real ad.
You could produce immersive VR content specified only by prompts and in which any action is possible.
Humans interact with their environment by subconsciously simulating it and predicting what will happen in the next few moments. This ability gives us the capacity to work more efficiently and reliably in any environment. These world models will serve a similar purpose to the AI and robotic systems of tomorrow. This is a foundational piece.