The Time to Pounce Has Come
I agree with DonnieBoy. Microsoft will try to leverage their MSOffice monopoly to dominate the newly emerging marketplace of Web-Stack and Cloud Computing solutions. I also believe that for Microsoft, the final pieces of this puzzle fell into place on March 29th, 2008 with ISO approval of the MSOffice-OOXML document format.
For most businesses, Microsoft is the "client" in "client/server". The great transition from client/server to client/ Web-Stack /server has been slow because Microsoft was uncertain as to how they could control this transition. Some light was shed on the nature of this "uncertainty" when the Combs vs. Microsoft antitrust case brought forth a 1998 eMail from Chairman Bill to the MSOffice development team. The issue for the good Chairman was that of controlling the formats and protocols used to connect MSOffice to a Web centric world. MSOffice support for Open Web formats and protocols like (X)HTML, CSS, and WebDAV were out of the question. Microsoft needed to figure out how pull off this transition with proprietary formats and protocols. And avoid the wrath of antitrust in the process!