Some relevant discussion in the piece:
> “Once a pirated movie was found, Mr. Vasallo and Plaintiff would send YouTube a takedown notice. YouTube would then remove the pirated video movie in its entirety. However, YouTube would not remove all matching videos, as YouTube would specifically only remove the one video from the one infringer related to the single infringing upload identified in the takedown notice.
> “The same infringer would be free to upload the video again until three takedown notices were filed against him within a ninety-day period. Then and only then, would YouTube cancel the infringer’s username. The same infringer could then create a new username and begin the process of posting the pirated videos all over again,” the complaint notes.
> Over the past several years, the law firm sent over 10,000 takedown notices for pirated films that were viewed more than 500 million times on YouTube. The video service maintains that this is how the DMCA works, but the movie tycoon argued that the company should do more.
This (that is, uselessly) is also how YouTube used to handle domestic copyright claims. It is the process the law specifies. But they moved to their ContentID system despite not having to. Why?
Whatever reasons applied there may also apply here.