Firefox's total MAU is still dropping over time. This is their own data on the matter... https://data.firefox.com/dashboard/user-activity https://data.firefox.

Firefox's total MAU is still dropping over time. This is their own data on the matter... https://data.firefox.com/dashboard/user-activity https://data.firefox.com/dashboard/user-activity They've lost about 50 million users between 2019 and 2023 - roughly 20% of the 2019 totals. In my opinion - Google pays because having a well known name that they can claim is still competing in the browser space is beneficial to them with regards to antitrust and monopoly laws. The ad revenue from the Firefox user base helps to make that cost manageable.