The law required that the operators of YouTube take stronger action against repeat offenders. They didn't. We were actually starting to line up the evidence to

The law required that the operators of YouTube take stronger action against repeat offenders. They didn't. We were actually starting to line up the evidence to demonstrate beyond any doubt that they had been clearly informed about the repeated infringement and that DMCA-compliant takedown notices had been properly filed in each case, which would have set up a lawsuit against YouTube if we'd been inclined to pursue them. In practice, we never did, but not because of anything YouTube changed. The offending party slipped up so we could identify them, and then they stopped misbehaving after we contacted them directly and made clear that we were preparing to take legal action against them personally.