(59th)Chrome on Linux

I read something promising from the Lifehacker Feed today. I've been waiting for quite awhile for this brilliant lightweight browser to appear on other operating systems than on windows. It would be really nice to e.g. write this post in Chrome instead of Firefox. Which is a great browser, but lacks one thing, the simplicity, like I've mentioned previously.
The reason for this post is just the thing, that Google has some sort of Open Source-ish reputation and still the work that they do in the first place is with Windows. Is that because they'd like to dig a hole beneath the slow feet of Internet Explorer and by that get a bigger piece of cake? Or is this the fact (like it seems to me) that most of he Google application development is done above windows anyway. What is Googles open source strategy? Do they even have one?
I have my doubts and opinions, of course. As far as I can understand, Google is a company, which main purpose is to make profit by creating solutions and innovations, I suppose that is the reason for the lack of Linux -support in their product catalogue. At least I sincerely hope so, since the other possibility is that they haven't even thought about it, and if so, it's not that magic and innovative company to play with. Might be that it still isn't, since the lack of openness.