*facepalm*

There's a HUGE pile of differences between EME and Flash. With flash this is an external plugin that the user has to obtain from another source, not part of their supposedly free and open browser. This is important, not just because it imposes some slight extra effort which acts as a minor discouragement and hopefully prevents unnecessary use of flash on occasion, but also because it gives the user a cue, a pointer to the fact that a .swf file is NOT the same thing as a web page. And that if you want to experience the free and open web without a compromised browser you can, you dont install flash at all, or you whitelist it or whatever.

It's a different thing, it's outside the free and open web but still accessible through it, if you install the necessary compromise on your machine. All clear enough that non-technical users can, with a little effort, get a roughly accurate understanding of the situation and make their own choices accordingly.

With EME you have just blurred this to the point none of that will be true anymore. You're officially blessing this thing, in the minds of any innocent non-technical users who trust you, as part of the free and open web.

Mozilla was afraid of losing marketshare, fine. Mozilla needed to ask itself instead why it had marketshare to begin with. It was not because Firefox had the best support for Netflix!