I'm amused at the "Sony Readers are 10%" meme. The last "what was the last eReader you used" poll had Sony briefly win over Kindle before they finally (last I checked) tied.
Granted, that was on MR, where hardcore readers hang out, and the hardcore readers tend to lean towards larger libraries and thus the reader with the most robust library management. However, "heavy users" also buy the most books, so...
Sony Readers are far from dead. I know several people in real life who own their readers.