Microsoft's Steve Ballmer Does Not Fear Dropbox or an Office-less IPad - Businessweek

Excerpt from a wide-ranging interview:

"You guys face the huge challenge of trying to advance a product on which about 1 billion people rely. You want to modernize it, but you don’t want to break anything that people need. Partly as a result of this, Microsoft is coming to the cloud late and now going up against a company like Dropbox that already has 100 million users.
Well, you’ve got to remember, 100 million sounds like a pretty small number to me, actually. We’ve got a lot more Office users. And actually if you even want to go to the cloud, we have a lot of Hotmail and SkyDrive users. I’m not beating on Dropbox. They’re a fine little startup and that’s great."

Microsoft's Steve Ballmer Does Not Fear Dropbox or an Office-less IPad - Businessweek