It's really hard to be an advocate for something important but which most people don't care about and which the opposition has deep pockets. Have mercy on Cory Doctorow, he's better at it than most of us. Content companies have been doing it since Silverlight, but Silverlight wasn't a standard, and that's not a trivial difference. If it's in the standards not only does every browser have to support DRM, they have to support it faithfully because, unlike every other bad behavior browsers try to circumvent on your behalf, not working against your users' interests with respect to DRM is illegal. But yeah, Firefox has gone to shit, and from the stories coming out of Mozilla it's not going to stop going to shit until the bulk of the work moves out of the Mozilla foundation or there's some kind of coup to get rid of the people in charge.