I don't know why this is being framed as a whole "Open/FOSS Community" thing, remember, there is no community, there is no authority.
OpenUSD is yet another standard for storing 3d models that Pixar and the gayming industry is setting up.
It's "open source", but it's a commercial standard, primarily made so Pixar and other studios don't rape each other with proprietary licenses for 3D file formats.
And of course the second goal is to get coders to work on this, for free, it's not just a file format, it also has a python scripting side to generate/manipulate data. (studios love this shit for "the pipeline")
That's going to require a lot of maintaining, someone needs to do this, for free. And if it's going to be yet another tool someone is going to have to learn "for the pipeline", so making it FOSS gives it more incentive.
Pixar, Adobe, Autodesk, etc. are all Californian companies so of course they have some stupid soon-to-be-raped-because-she-voted-for-it bitch (or alternatively, Black History PhD Will "Rape Victim" Stancil) on a payroll to make up Retard Gay Nigger Guidelines.
They have to pay their dues to the Gay Retard Nigger Religion of California or else Gavin Newscum stops clearing the dry bush next to their mansions and he may also bring some brown junkies near it to play with matches.