If a simply migrate tool existed that could preserve everyone's bookmarks, saved passwords, saved banking details, settings, etc and transfer them to firefox or other browsers it would be significantly easier to get people to move.
The biggest blockade I am seeing in getting people to move is not their love of google, it is the stickyness that having all of their shit built up in the browser causes. A simple and easy to migrate method would get people off it.
I'm not talking about just me. I'm talking about getting mass migration to occur. The only people you're going to get to go through anything that takes more than 10-20mins at most are people that REALLLLLLLLLLLLLY care a lot.
I try new browsers all the time and it's like 5 minutes to switch back and forth between all of the chromium skins and Firefox, and that includes my addon settings, if you don't have addons it's literally one button that pops up when you first launch it. People don't switch because what they have "works" and they don't really care.