define 'citizen' - > a legally recognized subject or national of a state or commonwealth, either native or naturalized.
Oh indeed. Not sure how that happened.
In any case, my point is that the words are used in different contexts to emphasise different things. People don't talk about "citizens" in the context of the media market, because legal nationality isn't really relevant to the topic.
Better to just call them people, which is factually correct, implies they should have equal treatment, and is somewhat more relevant WRT the commercial nature of TV unless you're trying to use TV commercials to sell something that would appeal to people based strongly on nation of citizenship like Mexico flags or immigration lawyer or language learning products or similar.