Not only among our family and friends, but also because our choices create a lock-in effect due to the nature of our work.
When you use Chrome day in and out, your work is going to be optimized for Chrome and will work best on Chrome. This led to a Chrome-optimized web and while Google isn't necessarily to blame, we're back to the days of "works best in IExplorer 6".
Companies and products that attract developers will eventually attract regular people as well. You could say that this is a chicken and egg problem, developers following the users, but with few exceptions (like the iPhone) in my experience thus far it's usually the developers that come first.
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It's worth mentioning that Chrome isn't popular only because of its technical excellence, but also because of Google's incessant marketing and bundling. But if we remember Microsoft and their declining browser market share, marketing and shoving your products down people's throats isn't enough. The product, especially if it's a platform, has to not suck and to be used by developers as well.
So yes, if other browsers like Firefox want to stay relevant and grow, a major requirement is to provide excellent developer tools.
Kudos to Mozilla for understanding that.