Having read this article, I would be very interested to hear what the author (or anyone else who has the same views) thinks of Amazon. To me, Amazon seems to be

Having read this article, I would be very interested to hear what the author (or anyone else who has the same views) thinks of Amazon. To me, Amazon seems to be an example of a company that does NOT have a focus (or has been widening it's focus from books, to online selling, to pretty much anything) but which has not been suffering for it. Why not? What are they doing right?