The fuss being made by trade publishers over e-books should really be put in perspective:
Over the next four years, Greco predicts these drivers, among others, will result in the US market for professional and scholarly ebooks growing by 94% to $2.60 billion. During the same period, he forecasts that the trade book sector will undergo growth of 119% to $330 million. This would mean that scholarly and professional ebooks will continue to dominate the US market, accounting for 74.7% of ebook revenue through 2013. Even with growth of over 100%, trade books are only forecast to grow to 9.5% of total US ebook revenue.Michael Clarke under, The Scholarly Kitchen, Nov 2009
You should read the whole article.