Not accidental
This was always the plan.
Anyone who thinks differently hasn't been paying attention. The DMCA is not about copyright -- it's about corporations being able to lock out competitors. To some extent, private citizens have been caught in the crossfire, but "the pirate bay" or similar was never the target. It's always been about gaining monopoly power; When you control the treasury, you have the power. It doesn't matter whether you're a President or a CEO. And ultimately, that's what the DMCA gives: A means of power.