In most of the universities and colleges in Canada's francophonie and in our minority communities, college training is quite centred on the needs of employers. At the college level, it is much easier to determine whether there needs to be cuts in certain programs as a result of decreased demand for labour based on a number of factors.
University programs take four years. It takes time before the number of registrations can go down. Sometimes it can take quite a while. You gave the example of nursing programs. I can tell you that most of the nurses who graduate from our universities have no trouble finding work in Canada if they are bilingual.