Jamie gave the open source Mozilla project about a year and a half, including the months of pre-source release preparation (and I think that's being generous.) Brendan Eich and Mitchell Baker didn't give up so easily and thirteen-plus years later they're still giving all they've got to make sure that Mozilla continues to be successful in promoting choice, opportunity, and participation on the Web.
Some things are worth fighting for and I believe that the Web is one of those things. I'm proud to work with some of the founding members of mozilla.org and think it's a phenomenal thing that such talented people are willing to commit their professional lives to the Mozilla mission when there were and still are far sexier opportunities available to all of them.