I don't have an e-reader so I can't speak for others about this; however, I'd think that it wouldn't be much different than reading a paper edition of the same book. What might be different is the cost associated with this; from what I understand, e-books are less expensive than the same paper version of this. Also, those who normally wouldn't read a book might consider reading an e-version of one simply because this format is more appealing to them. And, as this article states, publishers are now pushing writers to create more versions of their work in shorter formats, which will appeal to more and different types of people, as a means of drawing them in. If someone reads a short story by this author, for example, and enjoys it, they might consider reading longer versions, such as novellas and novels later on, and this will increase their readership. This wasn't done in the paper format. If an author chose to write these other versions, that was great, if not, then they stuck to the format that they preferred to write. Now, they're expected to do all forms, plus
write several novels a year. A person is only capable of so much before the overall quality of their work will begin to deteriorate due to writer fatique and lack of original ideas. And yes, some authors have produced more than one novel a year, but that was their choice, and it wasn't forced on them, as well as having to produce all of these other forms of fiction in between writing these extra novels. And besides that, writers aren't assembly line workers, they're artists who create, and that too is the difference here. Hope this makes sense.
*Forgot to mention that literary authors are exempt from this, and this should show why this matters. Literary authors take more time to produce exceptional pieces of work. And that's why this matters. Other authors still need time, whatever that might be, to produce the quality that is required for their pieces of work.
"Why fit in when you were born to stand out?" Dr. Seuss
"Your beliefs don't make you a better person, your behaviour does." (unknown)
"If everyone is thinking alike, then somebody isn't thinking." George S. Patton
The poster formerly known as Writer Mom (stolen from Prince)