Nvidia Explains Why It Believes USD Is the “HTML of the Metaverse”
roadtovr.com
roadtovr.com
USD has some major pain-points, the most important one being that unlike HTML, it has absolutely no specification for the file format. Everyone using it would have to go through the single USD library. See https://rystorm.com/blog/i-would-like-usd-to-succeed (https://news.ycombinator.com/item?id=32591840) for a more balanced view.
Interesting approach, but I think a good XR experience is much more “declaration” of a scene, interactions will be important. I suspect the end result will need this USD with some kind of semantic graph to process relations.