If you're asking whether our policies changed before, during, and after fair dealing, the answer is no. We still have the same practices. What has changed is that we've had to let go our librarians and library technicians because of chronic underfunding of our education system. Some of those things have changed, let alone the ability to pay for new textbooks. Some of those things have changed in terms of the length of time that we keep textbooks around.
On May 10th, 2018. See this statement in context.