Your premise is wrong. Much advertising is trying to get you act in a way that is in both the advertiser's best interest and your best interest. For example th

Your premise is wrong. Much advertising is trying to get you act in a way that is in both the advertiser's best interest and your best interest. For example the ads I receive in the mail from local grocery stores advertising items that are on sale. They often inform me that some item I was already planning to buy, but at another store, is available for cheaper at their store. I win by saving money on my groceries that week and they win be getting sales that they would have otherwise gone to a competing store. It's the competing store that loses.