The best option might be to sink this development energy into something that will draw users from other browsers, if they can figure out what...
The best option might be to sink this development energy into something that will draw users from other browsers, if they can figure out what...
You say Mozilla should figure out what will draw users from other browsers, but you've outlined what will draw users from Mozilla to other browsers. In the end, people want content. The content providers have more control. If 70-80% of the browsers already support the DRM they want to use, the other 20-30% will follow or be left out. Which is exactly what happened here.
All of that said, yes, of course this is something that will serve as a draw for users away from Mozilla. And yes, of course Mozilla might not be able to find something else that can serve as a better (or even comparable) draw that will not compromise their principles at least as much. I'm not casting aspersions at Mozilla and saying "Gee, they're dumb, why don't they just...". I'm saying "It would be better if they had found X" where I'm not at all sure such an X exists.
The problem is not that Mozilla implementing EME removes leverage to force Netflix into abandoning DRM (this won't happen anyway anytime soon), the problem is that once DRM is readily available without a large technological investment and without losing too many users, virtually everyone will use it for virtually everything, simply because there is little to none incentive not to do it, from a publisher's perspective.