Unity supports USD -- also Unity isn't technically a content creation tool (well...in the sense of what Adobe and Autodesk tools are). It is way bigger deal for

Unity supports USD -- also Unity isn't technically a content creation tool (well...in the sense of what Adobe and Autodesk tools are). It is way bigger deal for the content creation tools to be aligning on an export format than consumers of said content (i.e. Unity) to align on importer.