It just proves so called Canadian culture, art, music sucks and cannot stand on it own two feet. Canada would rather have American culture than its own shitty home grown crap.
One could say this, one could also say that American mass market programming a) just appeals to the lowest common denominator (reality crap, game shows, manipulated news programs, etc etc) b) is so overpowering and invasive that it's like the kudzu of the media world.
The US has a much larger budget for the production of TV shows, music, etc, that a country with a population that is only slightly more than 10% of yours (35.3M vs 317M) just plain and simply can't compete, so we know this and have simply enabled laws to protect our culture in that regard. Imagine what a movie like Avatar would look like if instead of of a budget of $237M it had been created with a budget of $23.7M (please note, I'm not going to get into the argument of whether or not it was a good movie overall, but it had pretty damn good special effects). The difference would have been night and day, lesser known actors of probably lesser caliber (Sigourny Weaver earned $8M on her own for her role, with a budget of just $23.7M no way would they have gotten her), much poorer special effects (think the Scorpion King in the Mummy 2 and how bad he looked), etc etc.
Just because we tend to consume more US culture, art, music, etc than our own, in no way means ours sucks, just yours is more shiny.