Do you really believe that? The way I see it, most people just don't care. At all. Else they wouldn't sell their souls to private companies (e.g. Facebook and Google) without a second thought and we'd see more outrage against government surveillance that's being pushed in nearly every country all over the world.
Firefox is unlikely to gain much of a market share with only privacy-focused changes. People care about ease of use and especially performance. FF lost a lot of market share due to its horrible performance, compared to Chrome.