How is TV programming related to advertising?

The better the programming, the more viewers will tune in. The more viewers tune in, the more TV networks can charge for commercials. So a hit show will command thousands of dollars per commercial spot. If a show has a low rating, it will command a fraction of the price. The SuperBowl is traditionally the highest rated show every year. Therefore, it's also the most expensive to advertise in. (Millions of dollars for a 30 second spot.)