"Plutocracy literally means rule by the rich. 'Rule' can have various shades of meaning: those who exercise the authority of public office are wealthy; their wealth explains why they hold that office; they exercise that authority in the interests of the rich; they have the primary influence over who holds those offices and the actions they take. These aspects of 'plutocracy' are not exclusive. Government of the rich and for the rich need not be run directly by the rich. Also, in some exceptional circumstances rich individuals who hold powerful positions may govern in the interests of the many, e.g. Franklin Roosevelt.
"The United States today qualifies as a plutocracy – on a number of grounds. Let’s look at some striking bits of evidence. Gross income redistribution upwards in the hierarchy has been a feature of American society for the past decades. The familiar statistics tell us that nearly 80% of the national wealth generated since 1973 has gone to the upper 2%, 65% to the upper 1 per cent. Estimates as to the rise in real income for salaried workers over the past 40 years range from 20% to 28 %. In that period, real GDP has risen by 110% – it has more than doubled."