I made this post a little while back...
I decided to switch to Firefox even though it felt weird to be off Chrome.
This isn't the world's most important news, but I'd like to make note that Firefox is now my default browser and just feels like my natural, normal browser.
In fact, when I go back to Chrome (which I still do plenty of, because I develop for that browser), it feels as weird as Firefox did when I first made the switch.
My muscle memory already thinks of Firefox as synonymous with "browser" in my normal desktop workflow.
Psychology and small user habits are generally what keep people from making consumer switches. Any campaigns to convince many folks to move to a new tool (either by that tool's own marketing or perhaps by third-party activists) should be acknowledging of how ingrained these habits can be, but also aware that the new thing becomes habit quickly enough.