I think ebooks is a great idea because it enables us to not bring heavy papers. For example, if we need some dictionaries to carry, it's really great to have ebooks of them. However, I don't prefer those ebooks when reading novels. Because the ebooks don't make me feel satisfaction when I finished reading. I think this is a part of what people like about reading novels.
So, I don't think there will be no paper-based readings' demand. But the number of the usage of ebooks will be intensified. Because it is still useful.