Well there is also that Mozilla likes to proclaim how much they care about privacy but then keeps adding telemetry and a million of other ways that the browser leaks your data without any easy way to opt out (when it should ALL be opt in) not to mention the search deal with the anti-privacy devil. So I disagree that we have seen whether a focus on privacy is enough only whether privacy maketing without actually backing it up is enough.
Is a focus on privacy and independence not enough?