Maybe enterprise or businesses will like it - so they can avoid their employees visit whitelisted sites that mistakenly have malicious code in the ads. Eg. Flash
The power of default settings is huge. Perhaps you're thinking of yourself or your peers.90% of the rest of the population just doesn't care about these issues.
Source: http://fortune.com/2015/06/16/apple-google-maps-ios/
However my supposition is predicated on the continued restriction of data and speed by carriers. If any new business model comes along that upends that, then I suppose Americans won't become data usage aware.
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.