Google vs Microsoft in the Enterprise

I think that Chrome and Chrome OS give Google a fighting chance to compete with Microsoft for the SMB, Enterprise and Government markets.  Today Microsoft is the dominant desktop infrastructure vendor.  Over 80% of all business use desktops and servers running Windows OSs and most of them use MS Office applications.  The remaining is a very fragmented market divided between Apple and all the versions of Linux.  

Search is Google's cash cow and Windows OSs and Office applications are Microsoft's cash cows. The key here is that Microsoft is vulnerable as more and more business implement Cloud Computing services (Infrastructure, Platform and Software) from various providers.  Microsoft has several weapons to protect its dominant desktop and server markets in the Enterprise.  Bing is Microsoft's well funded and potentially competitive offering against Google Search.  Likewise, Chrome, Chrome OS and Google Apps are Google's well funded and, hopefully someday, competitive offerings against Windows OSs, IE, MS Office and Office 365.  This war is just starting and will play out over the next decade.  And I think consumers and businesses will benefit from the competition.  I wonder what IBM is doing?