Anthropologists specialize in the study of culture, and culture matters in marketing because it supplies the infrastructure for thought and feeling in America. How consumers see the product, the service, or the pitch, these are largely shaped by the culture in their heads. The marketer who understands this culture has an advantage. The marketer who understands culture very well has an extraordinary advantage.
BTW, my friend Steph is an anthropologist working to help design automobiles and other products.