Excellent comment, though I have a slightly different opinion. But Re: Apple/Google/Microsoft not permitting Dropbox to invade the "office": it used to be just

Excellent comment, though I have a slightly different opinion. But Re: Apple/Google/Microsoft not permitting Dropbox to invade the "office": it used to be just Microsoft. In fact, for many companies, it still is. Google is trying to carve out a piece of the action. They don't want to always be a search company that has some other red-headed step-projects. They've got their office suite, their OS, their browser, and their plan for world domination (ok, maybe). Apple is trying to create their own walled garden. But in "the office," that just means things like VMWare. In many ways, Apple positioned themselves where Microsoft was trying to go. Now they are faced with the difficult challenge of out-Microsofting Microsoft to capture the hold-outs. So will Dropbox "kill" Microsoft? No. (To clarify, none of Microsoft's competitors are going to be the stake to the heart.) Dropbox is a sync+backup service. I'm not disagreeing with the article: there's plenty of room for them to grow. But only Microsoft can kill Microsoft.