As I understand it, and perhaps Mr. Rae can clarify this, if I attend a post-secondary institution in Canada, I buy the book from the bookstore. The university can then burst it, scan it, and give it to me in an alternate format without incurring any penalties or fees, or be in jeopardy of contravening its obligation.
One suggestion might be to better enable those institutions and others in the production business to be a better resource to do that. It's always a matter of resources. Scanning a book is not just a matter of pushing a button and away it goes, because technology often falls far short of doing a good job. There's always that human element that needs to go in and actually fix the text, so that if it's a chart, that chart should be properly described. That would be the only improvement that I would see.