Since they don't "own" the data they lost, only "rent" it, they probably have to be seen doing something about it, lest they face the wrath of record companies.
This isn't aimed at pirates as much as it's aimed at non-pirates, especially companies with significant assets.
They know full well pirates don't care, but it's a message to any company or entity seen as "too friendly" with pirates or that enables pirates to do their thing.