The loss of authentic art
Theodor Adorno's argument against the Culture Industry was that because of the capitalist system in the west, any major attempts to bring art into the market would lead to the loss of authentic art. This is because it is more expedient for big business interests to ensure that people will spend money on their products, such that art will become less artistic over time, until what is left with the everyday person is disappointing, run-of-the-mill entertainment with almost no real art in it whatsoever.
The culture as a market force
Adorno argues that the market will absorb the arts, except for art of the esoteric and academic varieties, into the domain of products. Once art is thought of as a commodity, people will join the economy of entertainment. He sees this as an undeniable part of the capitalist system because it is one of the most effective ways of controlling and manipulating market behavior.
The class divide inherent to capitalism in the arts
This means that in a society that functions on the capitalist model, that when the commodification of the arts occurs, there will naturally be a class divide in the arts. Most arts will be only available to the middle and upper class, and again, of those, the most meaningful, powerful forms of art will be expensive and rare. The natural esoteric nature of art will sustain itself as an item of luxury, but that means that there are entire categories of people who are left with "market art" or commodified, ubiquitous, advertisement-filled entertainment of the masses.
