SPDX Becomes Internationally Recognized Standard for Software Bill of Materials

The IETF is not interested in standards like this which are not, in fact, about the Internet. They already have plenty of things to work on, and don't need to become a dumping ground for stuff somebody didn't want to take to any other SDO.

Nothing stops you taking the IETF approach for some new project, no blessing is needed. You can do your own thing and just wait for the recognition to arrive later.