Firefox doesn’t have a profit model to sell ads or user browsing behaviour like other browsers as far as I know.
I appreciate the languishing comment, at the same time Firefox has features that seem to be a little unique to it out of the box. Spaces comes to mind.
Getting really good at one thing might be beneficial.
Ai summarization seems to be more and more common in a browser. Maybe they’ll add it as a local feature once a model can comfortably run.
They are languishing into obscurity not because they aren't trying things, but because their browser functionality is languishing behind the others.