[the_duke]

Microsoft and Brave both run ad networks. They are trapped in the same perverted incentives. Same thing for Apple.

Firefox is the only one that doesn't.

Then again, Mozilla only survives thanks to Google for sending search traffic their way.

[y4mi]

Or the conspiracy take: Mozilla only survives because Google wants to make sure that an alternative exists so they cannot be considered a monopoly.

That would also explain Mozilla behavior for the last few years... But motivations from big corporations are rarely as singular and neatly defined as I just made it sound, so while that might factor into their actions, it probably cannot be considered to be THE reason for action.