It's worth researching the definition of what an oligarchy is to better understand the article, "Has America Become an Oligarchy?"
If American has, or is becoming, an oligarchy (as OWS protesters believe), the solution is not the redistribution of wealth, it's the redistribution of rule. Or put another way, within the structure of our existing constitution, a return to federalism would simultaneously dilute the power and corrupting excesses (and disappointments) of our federal government and dilute the influence of corporate and private oligarchs.
As a consequence, fewer taxes would accrue to the federal government and more taxes would remain in the states, as the proportion of taxes paid to the federal government over the state government would invert--increasing the 50 states' treasuries.
As an added benefit, federalism increases the representation of "the 99%" by increasing the power of their state-wide and locally elected officials.
All of this is possible within the framework of our existing constitution, but would require a supportive legislature and executive--both of which could be elected by both Tea Party and OWS with a common goal--improving our democracy through a redistribution of rule.
Radio worth watching: WNYC's Occupy Democracy