I think back when firefox was gaining popularity there wasn't really a public awareness for the need for a privacy focused browser. In other words, even fewer p

I think back when firefox was gaining popularity there wasn't really a public awareness for the need for a privacy focused browser. In other words, even fewer people than right now would've been interested in buying it because they didn't really think they needed it. Once someone gives away a roughly equivalent good enough product for free charging for a competitor becomes incredibly difficult and that ship sailed when MS bundled IE with windows.