Adobe acquired Allegorithmic in 2019. Allegorithmic were the makers of Substance Designer, Substance Painter and many other 3D tools that are de facto standards for digital texturing. They’re _widely_ used in the video games, film and design industries (among others).
Disclaimer: I worked for Allegorithmic and now work for Adobe.
Adobe makes many 3D tools that are able to import and export USD files. For instance, you could import a USD scene into Substance Painter, paint some objects and export it again in a lossless manner.
Disclaimer: I worked for Allegorithmic and now work for Adobe.