Based on your the start of your post, I find it very hard to believe you actually use Firefox.
One of those: "Firefox is sooooo bad, but trust me, I use it".
The war isn't lost, and we need to get everyone using Firefox, it just seems that you are contributing to Google's mission. It's a bit like saying "as a Ukrainian, we are already lost, let's give up". "No, thanks, we won't". We gonna kill this thing like AMP.
It is irrelevant to the point. The point is companies won't implement webDRM if their firefox userbase is too big and it's going to cost them money and users. If Firefox is used by 10% of users, the decision to implement it would potentially cost 10% revenue.
I'm highlighting how companies make these decisions and how this can kill WEI.