I  can sort of see why the CRTC does push the cancon committments like they do.  Over the years the commission has often given Bell, Rogers, Corus and a few others what they wanted in terms of amalgamation, limited competition, ability to grow the size of their businesses to compete internationally etc. 

There have been no commercial limits for AM/FM and OTA television for years.  Radio was opened up long ago for FM  and with a few exceptions stations are free to change music formats with no approval.  

All during this time the CRTC has been not overly demanding on the conglomerates or even broadcasters. In over 50 years how many licenses have been revoked or not renewed because of non compliance?  Not many.  And the CRTC mandate does not allow them to fine broadcasters when they are not playing by the rules.  They can give a shortened renewal, or inform the operator that their license won't be renewed at the end of the current license period.  And this is very rare. 

Beyond the traditional broadcast licenses and management of freqencies, the CRTC was created to attempt that at least some of  Canada's broadcast system had a domestic flavour.  To ensure that performers and artists were given the opportunity to be seen and heard in their own country. 

The track record on this has been spotty, but there also has been success.  Today we see more cancon by far being produced than ever before.  At times the success unfortunately has been more international than at home. However this seems to be changing bit by bit.