The article touches on that:

> Maybe this is just a stage of development for online video platforms: grow first, then cover your legal bases. Some might even see poetic justice in the potential disruption of YouTube’s business by an upstart that plays a little faster and looser when it comes to copyright enforcement.

There's actually still quite a bit of piracy on Youtube. Channels that do this will often crop the video, or change the pitch of the audio, to avoid flagging from Youtube's piracy detection algorithm. For example, I saw the film Citizen 4 relabelled as something generic like "Surveillance Documentary" and it had millions of views.

YouTube started under much different circumstances. Facebook doesn't really have an excuse.

Sure, but YouTube was a startup in a nascent industry.

Sure but from my understanding of the article youtube isn't really the aggrieved party it's the creators that are.