What I find interesting is that with 100 million iPods and several zillion PCs out there, to say nothing of the PDAs and other smartphones, that Kindle (5-10 million, max, installed base) actually runs as high as 80% of the Amazon customer base and (if the 76% is to believed) 60% of *all* ebook buyers.
Doesn't seem to support the "multi-purpose device uber-alles" crowd, does it? Not when you consider that the majority of the 40% of the market not buying Kindles is buying Sonys, Nooks, Pocketbooks, Hanlins, Bookeens, etc...
It's early in the game, of course, but I'm thinking the multi-purpose device viewpoint is (for now) a lot of pundit sound and fury but little consumer cash-register action when it comes to ebooks.
Or maybe reading on iPxxx's whets the apetite for ebooks and greases to path to dedicated readers? Sure doesn't look like dedicated readers are going to vanish in a puff of smoke any time soon, either way.