In fact, it's often argued any party to find this MUST sue infringing parties, for fear of otherwise losing their copyright. That magically seems a non-issue in these cases. It's not anyone else's cognitive dissonance about the morality of piracy or inferring Warner Brothers is any more guilty than an individual accused of the same. It's a sense of anger because they preach about responsibility and issue lawsuits under the guise of curbing illegal activity, while letting others off because...
Why do they let Warner Brother's off again? Oh yes, because they're also a giant media company on equal footing and their own lawyers and things like copyright protection, moral responsibility, and curbing piracy are all bullshit. And given I imagine they know that such cases happen, one has to assume they know it's bullshit. That's why people use "caught". They regularly say a litany of things, none of which seem true given what's actually happening.