Actually I think you mis-understand it. If buyer has license, he has to simply upload it via Youtube and the claim is cleared = he gets all the ad revenue.
Ad revenue goes to author of music ONLY if client does not have a proper license. So only pirates are monetized (besides clients who doesn’t care to upload a license after the claim).
Without CID whole social media would be a pirate bay of music.
You can read about it here: The AJ Community Guide #3: Content Identification (CID) - #2 by RedOctopus