> For the people who don't buy their e-books from amazon, I think the market is quite competitive. And tiny. Amazon has by far the largest in the US market, fr

> For the people who don't buy their e-books from amazon, I think the market is quite competitive. And tiny. Amazon has by far the largest in the US market, from numbers I just googled and haven't verified, Amazon is 83% of ebook sales in the US, and probably and even larger % if your consider "ebooks read on a digital paper device". Hardware technologies cost hundreds of millions to develop, and years of active sales to refine and bring prices down. Amazon has a "good enough" tech in their Kindles, so the market is stagnating, outside of some cool stuff like Remarkable, which isn't a new display tech stack, nor are their sales numbers going to support development of new techs.