Firefox overcame that disadvantage about 10 years ago. You could say Chrome did too (though nowadays Chrome is bundled so much it no longer applies).
"Firefox's total user share -- an amalgamation of desktop and mobile -- was 9.5%"
Firefox gained marketshare 10 years ago b/c most internet users were still early adopters. There people were more tech savvy and into open source.
Source: http://www.computerworld.com/article/2893514/an-incredibly-s...
That's a really interesting point. Makes it clear how high the bar is for new entrants.
