76% рынка электронных книг - профессиональная литература

Although consumer trade books get a majority of the attention, professional and scholarly books, which include the legal, scientific/technical, medical and business segments, hold 75.9% of the $1.76 billion U.S. E-book market. The latest market research report from media and publishing forecast firm Simba Information, Professional Publishing in the Digital Age: E-Books in Libraries,” predicts library collection managers will set aside more of their budget for E-books over the next few years.

via marketwire.com

А сам рынок $1,76 млрд.
А по другим версия 61% рынка электронных книг — это Adult Fiction.
Вот и верь статистике после этого.