Firefox took marketshare from IE when that was impossible. It could do it again with Chrome, if things change a bit. Some problems with Mozilla are that they don't do community management well any more. In the old days, there were amazing grassroots-driven projects like spreadfirefox.com. It is not like that any more. Grassroots supporters have trouble participating, even if they try. For example, I tried to create a…
These two suggestions -- Mozilla getting involved in meetups and not deprecating an API allowing vim navigation in the browser -- would take Mozilla even farther from relevance, assuming any nonzero opportunity cost to those actions.