How much American TV watch people in South America? How much English TV watches a German for example, or Italian? I would say, close to zero. So the first issue is that Western media landscape is fragmented. So it is difficult to project such possible attack to outside.
Second issue is media freedom. Media is truly privately owned and there is strong culture of press freedom. Still, there is probably also some level of cooperation with the government. So we should always pay attention if the government is trying to sell us something through media.