I'm speculating that Google is trying to eat away at M$ back-end. By making the front-end free. The latest Exchange will probably not work correctly in other browsers, where as Google's office + e-mail will. Do you see where I'm going with this? Microsoft tries to hide its technology. If Google gives the average Joe a Laptop with Chrome OS, that will work 100% with Gmail and not his employers preferred Exchange. Then the employers might shift in thinking that perhaps we should move our email hosting over to Google. Google would then compete 1:1 with M$ in the Cloud Computing Space.
If there is no need for Exchange in your employers environment, what else do you need M$ for? If Google's Chrome browser support standards where as M$ don't. Google can go ahead and change the back-end entirely and the employers realise that most of their back-end don't need to be M$ any more. Google will offer an alternative Eco System where you will probably have suites/framework catered for Google development. You will probably also start seeing other companies have Gold or Platinum partnership with Google.