It might be useful to get a historical perspective on this issue, you can see what JISC reports were saying about the potential use of ebooks in higher education a few years back, in the reports cited at:
http://www.jisc-collections.ac.uk/reports/e-book-working-group-reports/
Unfortunately, the links there don’t go to the reports, which may be why the new report doesn’t refer to them. The one which I co-authored, on free ebooks, is available at: