It's probably slightly more correct to state that they failed to get full democracy.
America has a long history of denying democracy to its people, so it's not exactly a secret.
On a long enough timescale it can be seen to becoming more democratic but there were setbacks along the way and the oligarchy made a few strong moves over the last few decades.
I think democracy has definitely failed. And if people start fighting oligarchs, that wouldn't be a bad thing either, provided it is done strategically.