What, you've forgotten about SOPA already? Things do happen when you spread the word widely enough.
That study about the US being an oligarchy basically comes down to the Citizen's United decision paving the way for deep and widespread corruption. And that's a huge problem, no question, bigger than net neutrality for sure. But SOPA happened just last year, well after Citizen's United was passed. The Oligarchs don't control everything, just most of it.
You are certainly right to be outraged, maybe even despondent, but your fatalism isn't going to help anything. If you're upset about the oligarchy study you have two options: find a way to leave the country - Canada is nice, and apparently they have the richest middle class in the world now. Or you can volunteer for a campaign finance amendment which would overturn the Citizen's United decision.
Don't underestimate that second option. At the very least it would be a good life experience. Maybe you'd learn something, maybe you'd accomplish something, but at the very least you'd be contributing and doing something a little different with your time.