And the scrolling speed is slow and somewhat balky. All of these problems are bound to be surmounted. Rather like what it must have been like to drive a 1902 Oldsmobile. You were impressed, but on cold days when your Oldsmobile wouldn't start, you'd still go to your stable and hitch up your horse because you had to get somewhere. But when you get a much more effective, powerful, high resolution unit, this method of study will work well.
People do have habits and there is an attachment to pens and paper books.
The monitor resolution is a fraction of the quality and sustained reading is impossible. I don't think there will be a significant, across the board embrace of digital forms of media until they become easier on the organism than they are now. In all the areas in which I've been able to shift to digital methods of work and writing, teaching, even sustained reading in a few instances, my output has improved. Some of my colleagues resist for different reasons. They still don't impute to documents and research materials in cyberspace the same authority as print.