“If you’re video maker who’s had a video flagged and you want to dispute it, the process is Kafkaesque. The copyright holder alone decides the outcome: It can uphold its claim. It can agree that your video does not infringe its copyright. Or it can do nothing at all for 30 days, during which time all advertising is suspended. Most likely, your video eventually is returned to you—but by that point, the damage is done.”