Ballmer defends Windows as Apple gains Summary: At the Gartner Symposium ITxpo in Orlando, Fla., Microsoft CEO Steve Ballmer talks to analysts about Windows inside the enterprise as Apple continues to make a dent in market share with the introduction of new devices such as the iPad. October 22, 2010 -- 10:39 GMT (03:39 PDT) Loading... Please wait. Topics: Operating Systems, Apple, Hardware, Microsoft, Software, Windows Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.