UK/Ireland
Germany/Austria/Switzerland
France/Belgium
Netherlands/Belgium
Latin America
The Sinosphere
none of these have the sort of cultural protectionism Canada does
Ireland/UK is a terrible example. The Irish language has effectively been eradicated (except for a small contingent on the west coast and in schools), and the country still overwhelms itself with British culture. Even at that, the Irish dialects and English dialects are different enough to be noticeable.
Austria doesn't have protection, but it's two largest channels by viewership are Austrian. Over 50% of its viewership is Austrian based television. Austrian and German German have distinct dialects.
German speaking Switzerland is dominated by Swiss TV.
Belgium does rely more heavily on foreign broadcast, but it crushes Canada for local viewership.
You're right about Latin America.
Chinese is difficult. Several of the local dialects are effectively ignored by Beijing so everyone is forced to watch the standard Mandarin (or Cantonese) broadcasts. Taiwan has no protection, but I wouldn't be surprised if people avoid Chinese TV for political reasons.
Canada is a unique entity compared to Europe. The German and French languages differ dialectically enough that the other country's accent sounds foreign. Whereas a Minnesota accent is indistinguishable from a Saskatchewan accent. In addition, the American culture machine dwarves any other country's and Canadians will choose American content over Canadian content for no other reason than it's American. Many of these European countries willingly choose their own country's content.
Canada cannot compete with the States unless restrictions are put in place.