If I want to submit high quality work on time, it makes sense to use the best (most performant) tool for the job. Firefox, DuckDuckGo, and other alternative tools are helpful for personal use, but I have less to worry about when using Google and Chrome for work.
There are entire categories of search I perform on a daily basis in which Bing ignores the most relevant result (usually from a domain that just doesn't appear on Bing for some reason).
Google search does the job well. Chromium browsers are faster than Firefox, equivalent if not better resource usage, excellent web compatibility and ecosystem integration.
People want to get stuff done. Yes Firefox and DDG will not handicap you, but for the general population, search and Chromium do an excellent job over competition.