Most of Mozilla's money of course comes from Google to make them the default search engine on Firefox. And of course its a way for Google to ensure there's at least one alternative browser engine. Reading about how Texeira was recently fired and how executives have been pushing for AI features for a long time, Mozilla certainly loves chasing trends and then forgetting them, like how Google kills lots of products. It seems like the company can't stand on its own two feet without Google's funding and is poorly run.
What happened to Mozilla over the years? How much effort did they put in to trying to be a successful tech company? because it hasn't been until the past few that I really started following Firefox and Mozilla news.
I wonder if Mozilla could've been Proton, years before Proton AG existed, making their own comprehensive suite of privacy-friendly tools, since Mozilla makes privacy their brand. And they were late to the smartphone game with Firefox OS. If they were smart, they would've ensured their long term survival with an actual business, to continue funding development of their privacy and FOSS software like Firefox, without large funding sources like Google.
The anti-trust cases against google are why this is being brought up again. Google isnt propping up Mozilla out of altruism or a desire to, I dunno, advertise; they're doing it so that in court they can point at Mozilla and say, "look! Competitors!". Its the exact same reason Microsoft bailed out Apple in the 00s. Because without Mozilla, Google is unquestionably a monopoly.
Now, they are anyway. But by keeping Mozilla alive they can pretend in court that they have competitors and that they aren't engaging in monopolistic practices, which they absolutely are.
Honestly your comment is kind of why they pay the money. "Google doesn't have a seat at Mozilla, what's the big deal?". The big deal is that Google smothers competition and is pretending in court that they aren't.