Ebook sales flattening?

Best selling author Nicholas Carr points to the first quarter 2013 sales data from the Association of American Publishers as a testimonial for flattening of ebook sales. Carr talked about the slower ebook sales in 2012 earlier in the year and offered up many arguments. While they might be true, I tend to agree with Matthew MacInnis, co-founder & CEO of San Francisco-based Inkling, a publishing platform company. He believes that while it has been great to repurpose the classic book format as ebooks, going forward the industry needs to think of ebooks from a different lens. Why not? After all in the age of tablets, shouldn’t we expect interactivity from cookbooks and textbooks that come with newer fun ways of combining knowledge and learning?