something Mozilla doesn’t even dare, as that’s where they get all their Google money from
Or because they’re aware that it’d be a huge waste of time and money? It’d be a lot of work to build a search engine anywhere near as good as the existing alternatives, so it’d give worse user experience and waste time.
Why don’t you run the update service? Or if you do, how does the few seconds it takes to apply the update really impact you? I never even realize it apparently updates so much as it doesn’t nag or anything.