The “culture of consumerism” in the US is a myth: consumers have not increased their spending on luxury, non-essential items. Instead, the Consumer Expenditure Survey indicates that spending has increased on housing, childcare, and schooling while both wages and spending on other products have remained flat.
LINK: Cohen, Joseph N. 2014. “The Myth of America’s Culture of Consumerism.” Journal of Consumer Culture 16(2): 531-54.