I think Windows monopoly played a big part in IE dominance and Google search monopoly plays a big part in Chrome’s
Google's ability to promote Chrome on its search page
I am not sure the average Chrome user is feeling performance issues to the point where they’d want to switch away.
It would be curious to see a campaign where Firefox offers a version with all telemetry and pocket and Google search removed and creates an Apple style “Data Linked to You” Privacy visualisation comparing Firefox and Chrome. The Apple trend seems to be gaining steam.