So, tv stations produce tv shows. They generate revenue by selling time for ads that play during those shows. The purpose of ads are to get us to consume some product. In order to sell ads, tv stations must produce shows that we’ll watch so we’ll be paying attention when the ads come on. So, the shows are ads for the advertising time they sell. In order to get us to watch, to consume their product, they must advertise their shows. So we’re always either watching an ad, an ad for an ad or an ad for an ad for an ad.
There really is nothing on tv but commercials.