I believe most of Mozilla's revenue comes from its deals with search engines to be built-in to the browser. https://www.cnet.com/news/google-firefox-search-deal

I believe most of Mozilla's revenue comes from its deals with search engines to be built-in to the browser. https://www.cnet.com/news/google-firefox-search-deal-gives-mozilla-more-money-to-push-privacy/ https://www.cnet.com/news/google-firefox-search-deal-gives-m...