• Google is responsible for the open source browser Chromium

    Pretty sure that was Apple, not Google. Google joined the WebKit party later. By the time Google forked WebKit the other rendering engines (used by the FireFox and old versions of IE) were pretty much gone.

    Also, Now that Google has forked WebKit, we’re back to two competing engines. And at least on the websites I run our traffic is about 45% each (and 10% other). That’s actually more healthy than it used to be (95% IE).

    Private companies embracing open source browsers fixed a broken platform, it didn’t embrace/extend/extinguish.

    Yes, FireFox is struggling for marketshare. Personally I think their biggest problem is they have a legacy code base that dates back to Netscape. It’s got nothing to do with Google.