Yup, Remember this is how every web standard came into being, it was not a standard at some point, By definition it needs 2 interoperable implementations. Some

Yup, Remember this is how every web standard came into being, it was not a standard at some point, By definition it needs 2 interoperable implementations. Some of these are already long on their way to being interoperable standards (getUserMedia), some of them may never be standardised, but that is the aim.