As a Mozilla employee, speaking from my own limited perspective, it seems the company as a whole broadly agrees with this analysis even if it isn't vocalized quite this succinctly. Chrome started out being force-installed alongside Flash, and there is no solution to the bundling problem -- the problem is even larger in scale than the article suggests because of Chromebooks affecting desktop. People who use Firefox in the future will increasingly be people who do so consciously, presumably because they view Mozilla as helping them protect their privacy. Chrome is and will continue to be the default.
Eventually, Google will do something that is an abuse of their monopoly power. Either there will eventually be a privacy/creepiness fiasco, or Google will attempt to use Chrome as leverage to squeeze a competitor out of a market.
When that happens, Mozilla will be well-positioned as an alternative. The path forward in this view would look more like Mozilla as a constellation of disaffected companies and users attempting to free themselves from Google. It won't look like Mozilla on the side doing something by itself. We will largely be defined in opposition to Google.
The article correctly points out that a wiser Microsoft could have gotten a head-start on this inevitability by partnering with us early.