The article (specifically, the comments by the missus) allude to one of Kindle's greatest weaknesses: The fact that there's no place to see it before you buy. For me, seeing a $400 device, touching it, getting an idea of the quality of the manufacture, is key before I purchase it.
(Of course, given Kindle's looks, and the missus' comments, maybe keeping it out of stores was the idea all along...

)
But although I agree with many of her points about the Sony, I'm
still waiting to see it come down in price!