7 August 2015 Last updated at 11:22 BST
Conspicuous consumption is back in fashion for the super-rich – if it was ever out of fashion. But would someone really pay $100 for a doughnut?
Is the American dream all it’s cracked up to be?
And what about different models of capitalism coming to the fore, such as in China?
Comedian and writer Colm O’Regan looks at these questions and more in his fourth and final take on US capitalism.