It's not the reason you expect.
Invaders from Mars - Charlie's Diary
Why do we feel so politically powerless? Why is the world so obviously going to hell in a handbasket? Why can't anyone fix it?
Here's my (admittedly whimsical) working hypothesis ...
The rot set in back in the 19th century, when the US legal system began recognizing corporations as de facto people. Fast forward past the collapse of the ancien regime, and into modern second-wave colonialism: once the USA grabbed the mantle of global hegemon from the bankrupt British empire in 1945, they naturally exported their corporate model worldwide, as US diplomatic (and military) muscle was used to promote access to markets on behalf of US corporations.
. . .
Corporations, not being human, lack patriotic loyalty; with a free trade regime in place they are free to move wherever taxes and wages are low and profits are high. We have seen this recently in Ireland where, despite a brutal austerity budget, corporation tax is not to be raised lest multinationals desert for warmer climes.
For a while the Communist system held this at bay by offering a rival paradigm, however faulty, for how we might live: but with the collapse of the USSR in 1991 — and the adoption of state corporatism by China as an engine for development — large scale opposition to the corporate system withered.
We are now living in a global state that has been structured for the benefit of non-human entities with non-human goals. They have enormous media reach, which they use to distract attention from threats to their own survival. They also have an enormous ability to support litigation against public participation, except in the very limited circumstances where such action is forbidden. Individual atomized humans are thus either co-opted by these entities (you can live very nicely as a CEO or a politician, as long as you don't bite the feeding hand) or steamrollered if they try to resist.
In short, we are living in the aftermath of an alien invasion.