Indeed, and this is precisely the issue. It's not simply that Amazon sought to become the biggest online bookseller - no one else made a real effort.
I've only been to a few cons, but at each one, someone in publishing openly denigrated Amazon and their share of the book market. But, as I've argued before, Amazon's slice of the best seller market may be significant, but in it's share of the longtail market for books it is utterly dominant.
I tend to prefer bookstores to amazon.