The title of this CRTC report, "How Many Canadians Subscribe to Cable TV or Satellite TV", is exactly what I was looking for. Both Nielsen Media and StatsCan numbers are remarkably similar - something like 87% of Canadians subscribe to cable or satellite TV. The other 13% get whatever scraps are broadcast over the air.
I'm now one of the other 13%.
I had reduced my subscription to Basic cable some time ago because I found I wasn't watching any of the premium channels in the more expensive subscription packages. Today I cancelled Basic cable because I can't even remember the last time anyone in the family watched anything on any cable channel.
I haven't dropped Shaw entirely, though - they still provide me with my precious Internet link. The only way I'll be giving that up is when someone pries it from my cold, dead fingers.