That is not true. A marketing campaign is based on a media-mix, where it is decided what ratio of money will be spent on what. For instance 25% print, 25% outdo

That is not true. A marketing campaign is based on a media-mix, where it is decided what ratio of money will be spent on what. For instance 25% print, 25% outdoor, 25%television and 25% web. You reach different demographics in different ways with each channel. Marketers know this.