You can still disable EME if you don't want it. That's a lot harder to do on other browsers.
I would probably have dropped Firefox back then if it was the only browser that I couldn't watch Netflix in, and I wouldn't be the only one. I don't think Mozilla can bear the loss of userbase.
>>jeroen+(OP)
Right. That's why Mozilla can't meaningfully stand up against these forces anymore. It's not that they don't want to, it's that they don't have the market strength.