Rasters are far too good for simple textures + simple geometry. Even the best neural rendering works better when it has the bones of geometry, texture, motion and depth to work with. The baseline of spatial coherence you get from a conventional rendering engine is hard to beat with pure neural techniques.

Even in a "neural rendering optimistic" future, I can't see a way in which traditional rendering doesn't survive as a "control channel" that informs what the neural rendering does. To do otherwise would require making the bulk of the game logic neural too.

This. This is what they are trying to do. If they can flip the entertainment industry to use neural rendering using their "proprietary" api's then they would have cornered a market from the bottom.