Creating an ad for the TV and running an ad campaign on TV costs a lot of money. Do you think TV advertising is still effective? CNN is the most watched TV channel with 133 million viewers and BBC is number 2 with 130 million viewers. Now compared this with Facebook’s 3 billion audience, Instagram’s 1 Billion, TikTok’s 1 billion audience. Despite the high cost of advertising, the audience reach for TV compared to digital platform is very low.