If the ebook reader market is dominated by one manufacturer that supports both DRM'd and open formats, and some author refuses to sell books in an open format w

If the ebook reader market is dominated by one manufacturer that supports both DRM'd and open formats, and some author refuses to sell books in an open format while complaining about DRM, then that's not the manufacturer's fault. It's not reasonable to expect Amazon to support every hair-brained DRM scheme that a publisher can come up with.