Did a quick search and didn't see this article, apologies if someone has already posted it.
Math Of Publishing
Worst section in the article, but it does seem to jive with how publishers wish ebooks didn't exist:
“If you want bookstores to stay alive, then you want to slow down this movement to e-books,” said Mike Shatzkin, chief executive of the Idea Logical Company, a consultant to publishers. “The simplest way to slow down e-books is not to make them too cheap.”