<p>Microsoft execs say they aren't worried that Google is really going to take away 90% of Office software users.</p><p>Google "has not yet shown they are truly serious," about the enterprise app business, Julia White, a general manager in Microsoft's business division, told Quentin Hardy at the New York Times. "From the outside, they are an advertising company."</p><p>White's point is this: Google's revenue from its five enterprise businesses amounted to about $1 billion, or a mere 4% of revenues in 2011. Most of that reportedly comes from Google Apps, its cloud competitor to the Microsoft Office software.</p><p>Microsoft, on the other hand, must be serious because Microsoft Office represents 90% of the revenues for its $24 billion Business Division.</p><p><a href="http://www.businessinsider.com/microsoft-google-isnt-truly-serious-about-enterprise-office-apps-2012-12">Keep reading...</a></p>