I can see possibilities, but also can see the classic "apply to some body for permission to do something", particularly "Participants" registering "Services" in

I can see possibilities, but also can see the classic "apply to some body for permission to do something", particularly "Participants" registering "Services" in "Catalogs" that will require some form of attestation to a not-yet-defined set of standards. It's there that the old lumbering beasts of EU IT (eg Bull) will turn it into the equivalent of Web Services.