(a) Amazon is a monopsony (Amazon sells $5 billion of books per year, out of a $13 billion ecommerce book market, out of a $30-40 billion total book market).
If you want to sell ebooks right now, the only way to do it (and actually get significant sales) is through the Kindle, isn't it? Lots of publishers with only one viable reseller - sounds like a monopsony to me. The question isn't if they are one, it's if they're abusing their position as one. I'm not convinced by this article that they are, but the potential is certainly there as the popularity of the Kindle goes up.
If you want to sell ebooks right now, the only way to do it (and actually get significant sales) is through the Kindle, isn't it? Lots of publishers with only one viable reseller - sounds like a monopsony to me. The question isn't if they are one, it's if they're abusing their position as one. I'm not convinced by this article that they are, but the potential is certainly there as the popularity of the Kindle goes up.