Er, "kinda."

The last time I had a close friend at microsoft (and so heard the scuttlebutt) was a year or so ago, and at least from that perspective, it sounded like everybody there had an iphone -- and used google to search for stuff...

In other words, having a product, and actually getting your employees to use it when it isn't strictly necessary (e.g., they are gonna use MS compilers to compile stuff because it's pretty much necessary), aren't the same thing.

[... and a significant amount of MS dev work was done on iphone projects (e.g. in bing)!]