Not only do I know the word convergence, I'm beginning to detest it... I (and a lot of other people) do not want an all-singing, all-dancing "thing" for reading books... we want a BOOK READING device that does that and does it well... I've got a smartphone, a tablet, a notebook, a desktop etc and can read on all of them but I don't want to, I don't like it... I like reading on my 6" eInk screen Sonys (you can include Wi-Fi or 3G if you have to D/L a book anywhere but I've never felt the need) which are eReaders. I never expected to answer the phone on a pbook and I don't want it on my eReader.
You don't have to add non-essential junk to justify a higher price, you just need to make it the best of kind... and the Sony is better built and feels better and I like it better than other eReaders, that's good enough for me and for others...