Google—which acquired YouTube in 2006—defended itself by invoking the principles behind Betamax and notice-and-takedown, arguing that it had lived up to its legal obligations and that Betamax established that “inducement” to copyright infringement didn’t create liability for tech companies (recall that Sony had advertised the VCR as a means of violating copyright law by recording Hollywood movies and watching them at your friends’ houses, and the Supreme Court decided it didn’t matter).
