Why have eBooks stalled at 20% to 30% market share?

First, a little bit of history When the current iteration of ebook readers started, with Sony Reader in 2006/2007 and Kindle in 2007, the Dream for companies manufacturing eReaders and pushing ebooks was - Every Book for $9.99 in eBook Format. To take a 65% cut and make $6.50 per ebook Until Apple came out and started giving authors 70%, the ebook stores were only giving 35% B&N came out with...