It is quite telling how virtual no conference talks mention concepts like solidarity or technology that is useful for society as a whole (not tech that just enriches the few).
Google still blasts you to install Chrome at every opportunity if you use their services, and is heavily optimized for Chrome (e.g. Docs, YouTube). That's not really Firefox's fault.
Because just doing a browser is not working. Market share keeps declining. And Firefox is pretty good. They spend the majority of their resources on Firefox, and always have.