It's hard to consider the services that Radio-Canada offers to francophone minority communities and those that the CBC offers as two isolated entities, particularly in the country's regions. While the programming broadcast by the two services may be very distinct, they often share infrastructure and technical and other resources.
This pooling of resources is strategic. If you reduced the CBC's regional services, that would necessarily cut Radio-Canada's regional capabilities. You must bear in mind that regional services have already suffered previous cuts.
It seems to be that merely thinking about the CBC disappearing from the regions causes one to contemplate Radio-Canada doing the same.