Well, America is rough. It turned on hardcore capitalism mode for itself because a significant portion of its population wants to try and solo socioeconomic hardships and hates any one who doesn't want the same challenge.
But not to just blame the voter, lots of money is spent for setting up systems to be amenable to acquiring more money. The very richest have correctly made a bet that uprisings to displace the wealthy and politicians just don't occur here these days, and therefore there is no real threat or need to change the way things have been going for the last 25 years or so.