I read for pleasure, so I am not taking
notes 
, so I don't need a keyboard.
I only read/understand English, so my vocabulary is sufficient without the aid of a dictionary, which could use a keyboard for convenient input.
The perception seems that a single e-book reader configuration needs to fill
all market niches.
Over at the Astak group, I keep seeing people trying to make the model into totally different beast.
There is room in the Market for all the model feature variations,
If the publishers of content do not deliberately lock the content to a particular model(s).