I think you mean Pixar's. USD was designed for letting very large teams collaborate on making animated movies. It's actually terrible as an interchange format

I think you mean Pixar's. USD was designed for letting very large teams collaborate on making animated movies. It's actually terrible as an interchange format. e.g. The materials/shading system is both overengineered and underdefined. It is entirely application specific. For the parts of USD that do work well, we have better and/or more widely supported standards, like GLTF and PBR. It was a very dumb choice to push this anywhere.