Applications that I thought of as I read this:

Real-Time mapping of the environment for VR experiences with built-in semantic understanding.

Winning at geoguesser, automated doxing of anybody posting a picture of themselves.

Robotic positioning and navigation

Asset generation for video games. Think about generating an alternate New York City that's more influenced by Nepal.

I'm getting echoes of neural radiance fields as well.

Procedural generation of an alternative planet is the kind of stuff that the No Man's sky devs could only dream of.