addiction affluenza capital accumulation class consciousness commodity fetishism compulsive overeating conspicuous leisure consumerism corollary economic rent envy frugality hedonism income john stuart mill keeping up with the joneses luxury tax middle class narcissism norwegian american nouveau riche oniomania philosophy of futility positional good project gutenberg second industrial revolution simple living social status status status symbol sumptuary law the theory of the leisure class thorstein veblen upper class veblen good wealth