Regardless of the oligarchy, be they elected directly or indirectly, whether via overriding or non-existent influences from wealth-holders, be those wealth-holders individuals or corporations, or both, or neither, an underlying fact remains true:
No nation in the history of mankind regardless of continent, era in time, political philosophy of government, dominant or subordinate political party, available natural resources, or basic economic foundation (industries in that country which create wealth, regardless of how it is distributed), have ever been able to avoid inflation (often leading to hyper-inflation) when creating (printing) money in excess of the rate of GDP growth, regardless of what that money is used for (paying interest on a national debt, intentional deficit spending as so-called stimulus, money injection to ease liquidity concerns, and/or combinations thereof).
The USA money supply has grown in the past few years WELL in excess of the rate of GDP growth (which actually contracted) for a year or two.
In the USA, both major political parties are guilty of this behavior (albeit each to greater or lesser degrees).
If you want to remember another one, here's James Madison. "But what is government itself, but the greatest of all reflections on human nature. If men were angels*, no government would be necessary. If angels were to govern men, neither external nor internal controls on government would be necessary. In forming a government which is to be administered by men over men, the great difficulty lies in this: you must first enable government to control the governed; and in the next place oblige it to control itself.” –James Madison, The Federalist No. 51
Source: https://www.cato.org/commentary/madisons-angels
*the connotation is not to ethereal beings, but angelic-acting/behaving people, in many regards, altruists.
Many of the founding fathers (and other writers / philosophers of that era, not limited to the American colonies) recognized the corrupt nature of man(kind), independent of political party, and therefore wanted the smallest government possible.
The CATO institute is Libertarian in nature. James M. Buchanan won the Nobel prize in economics for his theories on the inter-twining of politics in economic decision-making. I am not familiar with Buchanan's direct contributions, but am intrigued to learn more. My recollection of the Madison quote came from the Federalist papers themselves; Buchanan's article was the first link from the search engine.