PDOv1 was initially a small project created and maintained mostly by 1-2 persons.
Even though it was quite small, it turned out to be a kind of monster which nobody really likes or understands.
Oh.. and did I mention that it never actually worked?

And now we're being forced to have PDOv2, which is of course very much different from PDOv1: it's being developed by a secret group of people (which includes some mysterious "vendors") aand.. it requires signing a legal paper it you want to participate or even read its spec.

PDO does not need a CLA, PDO needs *CARE*.

Doesn't matter how much "vendors" participate in PDO, it's going to be a total failure as long as nobody cares about it.
That was the biggest flaw of PDOv1 and CLA won't magically fix it.