"Kitsch is a product of the industrial revolution which urbanized the masses of Western Europe and America and established what is called universal literacy.
Prior to this the only market for formal culture, as distinguished from folk culture, had been among those who, in addition to being able to read and write, could command the leisure and comfort that always goes hand in hand with cultivation of some sort. This until then had been inextricably associated with literacy. Bur with the introduction of universal literacy, the ability to read and write became almost a minor skill like driving a car, and it no longer served to distinguish an individual's cultural inclinations, since it was no longer the exclusive concomitant of refined tastes.
The peasants who settled in the cities as proletariat and perry bourgeois learned to read and write for the sake of efficiency, but they did not win the leisure and comfort necessary for the enjoyment of the city's traditional culture. Losing, nevertheless, their taste for the folk culture whose background was the countryside, and discovering a new capacity for boredom at the same time, the new urban masses set up a pressure on society to provide them with a kind of culture fit for their own consumption. To fill the demand of the new market, a new commodity was devised: ersatz culture, kitsch, destined for those who, insensible to the values of genuine culture, are hungry nevertheless for the diversion that only culture of some sort can provide.
Kitsch, using for raw material the debased and academicized simulacra of genuine culture, welcomes and cultivates this insensibility. It is the source of its profits. Kitsch is mechanical and operates by formulas. Kitsch is vicarious experience and faked sensations. Kitsch changes according to style, but remains always the same. Kitsch is the epitome of all that is spurious in the life of out times. Kitsch pretends to demand nothing of its costumers except their money - not even their time."
Greenberg, C. (1965 ). Avant-Garde and Kitsch. In: B. Rosenberg & D. M. White, Mass Culture. The Popular Arts in America (págs. 98-110). New York: The Free Press.