Technology has changed faster than anyone could have ever imagined, and the existing DMCA simply isn’t able to address these new developments. The original DMCA was simply not designed for the kind of global data and advertising platforms that we have seen develop over time. It’s no surprise the old DMCA tradeoff has broken down in this environment – it simply wasn’t on anyone’s radar back in 1998.
Source: Getting back to basics on the Digital Millennium Copyright Act