Multiculturalism is a system in which there's a mix of culture that don't blend together. There's no "Canadian culture", there's just a bunch of people with their own culture all calling themselves Canadians. There's no central cultural element that people get attached to so in the end you've got a national broadcaster that no one cares about since cultural productions from elsewhere are seen as just as important as local ones and with the US' influence... Well, English Canada doesn't have much of a chance, does it? Not as if Anglo Canadians were told their culture is important anyway...

Meanwhile in Quebec you've got interculturalism where everyone is invited as long as they want to integrate themselves and it shows in the amount of culture produced by French Canadians for French Canadians and by the fact that R-C even gets defended by the separatist parties because it's a very important element to the survival of French Canadian culture.