What are the factors that are key for establishing product differentiation in the new post-recession consumer environment especially as it relates to economic indicators? What is a luxury good and should marketers of luxury goods abandon their efforts to establish premium pricing? How do changes in societal attitudes toward companies and products affect the way marketers of consumer goods think about the customer value chain? Provide examples of companies that have changed their approach to marketing in response to a shift in consumers value in changing economic times.