"... Mozilla first announced it would adopt DRM in May 2014, when the head of the Mozilla Foundation, Mitchell Baker, acknowledged that copy protection 'goes against Mozilla's fundamental approach,' but said that it had no choice but to hold its nose.Source: Computerworld
" 'We've contemplated not implementing the new iteration of DRM due to its flaws,' Baker wrote in a May 14, 2014 blog post. But 'a browser that doesn't enable video would itself be deeply flawed as a consumer product.' ..."
More Mozilla gags, but supports video copy protection in Firefox 38