Gotta use them drive letters for something!
Plus, if you remember how little storage those floppies had, you'd probably get as many drives as possible.
Is it true that Microsoft doesn't know hardware? Not entirely. It has been a dominant maker of mice, webcams and keyboards for decades. It has been making XBoxes for a decade, and its Kinect controller has been sold in millions. If I am not mistaken, it sold faster than the iPad at launch.
Kinect is gaming-console add-on. it didn't redefine mobile computing.
Mice? Keyboards? LOL? Compare these to the hardware Apple's churned out. You'll find the MS' "hardware experience" isn't even in the same galaxy.
And Xboxes . . . like Playstations, except you kept having to return them because they kept breaking.
Zzzz . . .
Maybe the Zune HD? Though no one really cared anyway.