Governments borrow money from the rich and from corporations instead of taxing them, then have to pay higher interest rates on those borrowings because the rich and the corporations complain that too much is being borrowed. To ameliorate the demand for higher interest rates, the governments' central banks are lending money nearly interest-free to the financial institutions and corporations so that they will continue to buy the governments' loans at the higher interest rates. In exchange for continuing to buy government debt (which will earn them a nice profit because they are using the cheap money to buy the debt), the financial institutions demand that the governments cut social services, lay off workers, sell assets and impose other austerity measures.
As a result of the austerity, governments take in less revenue, so they have to borrow more from the rich and corporations, who have hoarded the country's wealth, at the same time the governments' central banks are giving financial institutions more cheap money and giving them the green light to hand out more money to insiders, leaving them more vulnerable to the next economic downturn, when, because they are "too big to fail," they are confident they will receive another bailout.
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