First of all, there is nothing inherently wrong with consumption. Shopping and consuming are enjoyable human activities and the marketplace has been a center of social life for thousands of years.
The locus of oppression resides in the production function: people have no control over which commodities are produced (or services performed), in what amounts, under what conditions, or how these commodities are distributed. Corporations make these decisions and base them solely on their profit potential.
As it is, the profusion of commodities is a genuine and powerful compensation for oppression. It is a bribe, but like all bribes it offers concrete benefits—in the average American’s case, a degree of physical comfort unparalleled in history. Under present conditions, people are preoccupied with consumer goods not because they are brainwashed but because buying is the one pleasurable activity not only permitted but actively encouraged by our rulers. The pleasure of eating an ice cream cone may be minor compared to the pleasure of meaningful, autonomous work, but the former is easily available and the latter is not. A poor family would undoubtedly rather have a decent apartment than a new TV, but since they are unlikely to get the apartment, what is to be gained by not getting the TV?
...If we are to build a mass movement we must recognize that no individual decision, like rejecting consumption, can liberate us. We must stop arguing about whose life style is better (and secretly believing ours is) and tend to the task of collectively fighting our own oppression and the ways in which we oppress others. When we create a political alternative to sexism, racism, and capitalism, the consumer problem, if it is a problem, will take care of itself.
--Ellen Willis, nineteen-sixty-fucking-nine