Google has an extremely strong incentive to capture the web client market. Whatever Mozilla can do to make Firefox more popular, Google can outspend them by a factor 10 and do more, or better, or both.
I want Firefox to win but unfortunately I just don't see a path for it. My mindset at the moment is "I'm going to use Firefox for as long as it's possible, and then I'll find the least crappy Chromium fork available".
I don't know if it'll take 6 months or 6 years to get to that point but I really don't have faith in Mozilla righting the ship.