If each of your time steps is one week long, you are not modeling the stock price terribly well over a one-week time period, because you are saying that there are only two possible outcomes. ↗
Television has certain imperatives that CNN had the luxury of ignoring for a long period of time. CNN could take the position that the news would be the star, because in most of the programming day, they were the only all-news operation on the air. ↗