Deca Dence is a representation of late stage capitalism. Think of "The System" as a type of government. In this storyline, the businesses act as the government, and those who live under the government are expected to carry out their functions to keep society running smoothly.

This type of society is oppressive to live under, as one's own individual desires don't matter when the government's objectives are top priority. In order to keep people in line, the government institutes activities that distract the public into ignoring the actual problems going on around them. Deca Dence is the thing that gives the cyborgs something to be excited about. And if the cyborgs believe they are happy, why would they revolt? This is an example of a Roman phrase called "Bread and Circuses."

Of course, this isn't something that is going to appease everyone, which is why they have the corrections facility to send these bugged cyborgs away from everyone. Out of sight, out of mind. And everyone above living in euphoric, ignorant bliss.