[fjtorres]

Some people do prefer multi-purpose gadgets: for them, Amazon makes Kindle apps--they run just about everywhere.
For people who want an optimized reading experience, they make Kindle readers.

Amazon sells groceries--doesn't mean they'll be selling Kindle microwave ovens any time soon, even though I'm sure somebody out there would buy an ereader that also made popcorn.
(Cue in Steve Martin with the floor wax skit...)

The day Amazon can deliver a video-capable color reader with weeks-long battery life that is outdoor-viewable with good contrast and weighs less than a pound for current Kindle prices they will. But that day is nowhere in sight.
Until then, as pointed out above, they are not likely to sacrifice the K3's selling point features for a few incremental hardware sales.

One.
More.
Time.
Kindle is about ebook sales, not hardware sales.