Google has a vested interest in increasing the utility of the internet, too; the more applications go off your desktop and onto the internet, the more money they can potentially make. A lot of the things they did with Chrome are real technical improvements that will help make browsing a LOT more stable. For instance, they separated the tabs into separate instances, so that if one tab crashes, they won't all crash. They broke out plugins (like flash) as well, so that even if a flash program crashes, it won't even take down the whole tab with it.
I downloaded it- it's nice, very nice. And the installation was VERY painless- not only did it import all my Firefox bookmarks, it imported my saved passwords and cookies, too. Unfortunately, it did not support the 4th and 5th mouse buttoms for browser fwd/back, so I went back to Firefox.