> Can you elaborate how engineering on an open source product is prevented from doing the right thing™ by management?

I have a purely speculative and very pessimistic opinion that is to not compete too much with Chrome and Google, so Mozilla does not antagonize with the source of their money while still providing Google with a "but we have competition!" card that they can use to prevent governments from treating them as a monopoly.

This is almost a conspiracy theory but, hell, that's the only explanation I have for so many management failures and aversion to their userbase.