Thucy,
Currently, large companies do exercise an outsize influence on what happens in this country, and that's unfortunate. But it's a sick democracy, not an oligarchy, and your rhetoric is doing nothing to cure the sickness.
Let me explain why it's not an oligarchy. There is still an extremely high level of freedom of speech in this country (something rarely or never seen in an oligarchy or a monarchy), and while the corporate interests do exercise great control, they do it by bending the will of the people to their own (which is an imperfect process, and does not always work). That is, Congressmen (for example) feel beholden to special interests because they need money to get elected; but they need money to get elected because they need to reach people, and that is expensive.
So why does all this matter? It matters because there are still things that corporations could not get away with, or could not get away with making the government do. You and your silly friends can post on the internet freely, for example; if you had a real outrage to tell us about, we could read about it. This is how, sometimes, people get angry, and Congressmen realize that to preserve themselves, they need to try to do something OTHER than placate special interests, and bills get passed that corporations do not like (although often they are not very good bills -- but that is due to the flaws of how a democracy works, and the fact that ours is rather sick).
In an oligarchy, for example, the oligarchs could decide they wanted much more control of online copyright laws, and they could pass it. When they tried this in this country, a genuine furor resulted, and Congresspeople, not from principle but from popular pressure, backed down and did not pass SOPA.
Recognizing these different forces and how they threaten and/or preserve our democracy, and acting to strengthen it, would actually be productive. Characteristically, you instead choose an extreme and silly position, and cry about how the sky is falling while doing absolutely nothing that might make things better.