oh mozilla, why don't you just focus on Firefox. That is all we want.
People "want" a lot of contradictory things. People "want" them to be less financially reliant on Google, while also "focusing" on a browser in a market that is entirely commoditized and subsidized by 3 of the 10 largest companies in the world - and having a wholly implementation independent browser engine when it's so massively difficult and capital intensive that even Microsoft gave up on it.
Investing on AI is not going to make them less financially reliant on Google.