What is good for Jon is what Jon thinks is good. Our consumer culture, defined as whatever the consumer wants, is played upon by these companies. They tell the consumer through ads to badger the doctor until they get what they want, and that may not be truly good for them. The whole assumption behind consumer culture is that there is no definition of good besides what the consumer wants. This is at odds with the bulk of the Western philosophical tradition.
People ask what happened to values.
Capitalism itself, by promoting consumer culture, partially undermines values. Milton Friedman's book Freedom to Choose tells that a good society is one where people are free to choose what they want. What we're trying to do here at Maryville is educate thinking men and women who care about the world. In order to be thoughtful you need critical tools. The value of a liberal arts education is that you don't just go along with culture, you evaluate it.