>If Kindle doesn't adopt a given technology, it won't be commercially viable in the US. For the people who don't buy their e-books from amazon, I think the mar

>If Kindle doesn't adopt a given technology, it won't be commercially viable in the US. For the people who don't buy their e-books from amazon, I think the market is quite competitive. I mean, if you are reading PDFs, unless you like really small type or spending a lot of effort converting, you are going to buy one of the myriad A4 sized e-readers from various vendors. Most of the gutenberg readers I know use an off-brand e-reader if they buy new. >With no competitive market place for e-reader products, consumers buy whatever good enough technology Amazon sells. I own a handful of high-end e-readers, many of which run android. How come none of those android devices, for instance, my A4 sized Sony e-reader, run the amazon app available in the play store? I suspect that it's mostly that the Sony, in spite of being a much better reader for PDFs than my oasis, is simply not a better device for reading books that are formatted for the kindle. (I'm not saying that there isn't a problem... I'm just saying that the monopoly is almost entirely in the convenience of the kindle book store. Agreements with publishers. And I am claiming that there is much competition for the (much smaller) market for e-readers for content outside the amazon kindle e-book ecosystem)