Your point seem to be a rant about US social policies and is easily disproved by the fact that similar copyright terms existing in Europe where those things aren't the same.
AFAIK the European model is not as similar as you seem to be convinced. And the origin of copyright was from the beginning related not to the well-being of authors but rather publishers.
They exist in Europe because of a similar corrupting mechanism; just because the European system hasn't completely dismantled their social systems the way the US is close to doesn't mean that democracy isn't also being weakened by capitalism.