The thing is chrome is an open source browser with a lot of really smart people working to make it better everyday . IE, was none of theses things when Firefox came into the market. You also have to remember many of the core developers who built Firefox went on to build Chrome. And then even many of developers that built IE went on to work on chrome. In 2007, they had pulled together an amazing team to kick off the browser that is now chrome. IMO - Mozilla should use blink and be the privacy focused browser.