Does advertising shape culture, or does culture shape advertising?

culture that is created by advertising exposes humans to an entire new world, full of products and luxuries that humans may find appealing and are willing to purchase.  This advertising industry is a commodity in our everyday lives, where we walk, where we relax etc. If we did not have these advertisements humans would not know of products, such as Starbucks coffee or a type of cheese. Consequently businesses would fail due to lack of publicity, or may not even exist. The economy would be in danger from the business decline and no one would know what to purchase or what there is. As a result, the advertising agency forms a culture on its own, the culture of publicity and purchasing different and new products. The advertising shapes culture in these terms. However from this culture, advertisements are created. This means that advertising agencies concentrate on which products appeal to humans and exploits those interests in order to sell the product of the company that they are working for. For example, to compare Coca Cola with Pepsi, Coca Cola may be selling less than Pepsi, and the company creates Diet Coke, to appeal to the people that are trying to be healthier. Thus sales may increase due to the new products that appeal to those seeking healthier lives.  At first, advertising shapes a culture of which people purchase products that are advertised, and from there this culture shapes the advertising for a new product that appeals more to the people than a previous product, increasing revenue for the company. Conclusively, the advertising shapes culture at first, but then from there, the culture shapes the new advertisements.