On Twitter earlier I said this here thing:
There’s an implicit assumption in publishing commentary that the trajectory of media evolution (books, ebooks, websites, apps) is a known. That the long-term effects, drawbacks, & benefits of each medium will follow a predetermined path towards its manifest destiny. That ebook apps are as good as they'll ever be and will never integrate what research is discovering about learning and memory. That apps will always play the roles they play today. That websites will never reach beyond their current niche, except maybe into apps.
These assumptions are all unsafe. Ebook apps are a young and unformed species. The future of web and app dev is dynamic and changing.
What's more, the publishing industry isn't in charge of this evolution except insofar as it can sabotage ebooks with its misconceptions.