From the new terms:
When you upload or input information through Firefox, you hereby grant us a nonexclusive, royalty-free, worldwide license to use that information to help you navigate, experience, and interact with online content as you indicate with your use of Firefox.
I think there’s a difference between “operate Firefox” and “continue to develop Firefox”.
because while operating firefox costs no money (the software runs on my hardware), developing firefox does cost money (mozilla has to pay employees, …). so, selling your data might be necessary to make mozilla money sothat they can pay their employees, but it’s not necessary for “operate Firefox”.
There is not, at any point, a real necessity to sell your clients so that you can pay your employees, or viceversa.
Pitting the workers against the consumers is the strategy of oligarchy bourgeois.