On Alternate Revenue for Ebooks
I can't wait for there to be more ebook readers and ebook market places available. I love reading. I love books. I don't always need to have a hard copy of a book either. I'm perfectly ok with reading on an electronic screen. Yes I know it still freaks some people out, but in my experience having a hand held device to read the text makes it easier because you can adjust how far away the screen is from your eyes.
But back to the original topic. I think there are plenty of opportunities for business models based on renting books or something like that. I wouldn't pay 15$ a digital copy of a book unless it was really good and by an author I really liked. I would pay 3 or 4$ if I had access to a really comprehensive catalogue of science fiction books.
Alternatively you could do a subscription based model too. I would shell out 20$ a month if I could download digital copies of books I liked.