While Google's porping up of Mozilla might very well have been an attempt of reducing their exposure to being called a monopoly ... that's not a bad thing? It was working exactly as intended. While Chrome has become dominant (IMHO on merit, but it doesn't really matter), we, and many other people, always know that Firefox is a worthy competitor, and if Chrome would screw up, people could very easily switch to Firefox.
That, in my opinion, was an almost optimal win-win solution.
If Chrome would rest on its laurels, people could and would switch to Firefox in a heartbeat. Thanks to Mozilla getting Google money, we are not in that horrible situation where IE4 was the only (very generously said) half-way modern browser, and switching to Netscape would have been quite annoying.