Chrome has gained hold because too many ignorant developers have recommended it in their circles instead of FF.
Google has used its services to aggressively push people towards Chrome with banners, degraded service etc.
While the privacy issues have been actively downplayed by either ignorant bystanders or by astroturfing, I do not even think that is the biggest issue here.
It is the monopoly on every level, that is my biggest concern.
Chrome is now the most popular browser, and for a reason. It's clear that most people value better browser experience over privacy fears.
Plus Google says they don't sell user's data, they only use it to target their own ads:
https://privacy.google.com/how-ads-work.html