Quick search, here's a 2017 annual report. > Today, the majority of Mozilla Corporation revenue is generated from global browser search partnerships, including

Quick search, here's a 2017 annual report. > Today, the majority of Mozilla Corporation revenue is generated from global browser search partnerships, including the deal negotiated with Google in 2017 following Mozilla’s termination of its search agreement with Yahoo/Oath which required ongoing payments to Mozilla that remain the subject of litigation. https://www.mozilla.org/en-US/foundation/annualreport/2017/ https://www.mozilla.org/en-US/foundation/annualreport/2017/ Not a great position to be in. I would pay for a premium version.