I think this position is a little too extreme. Many ads fit your description, but some don't. In many parts of the United States, for instance, you simply need

I think this position is a little too extreme. Many ads fit your description, but some don't. In many parts of the United States, for instance, you simply need a car to live life, and car ads have the power to shape car buyers' choices in these areas. In a case like this, it's not true that they're buying "something they don't need in the first place".