Even after the ruinous financial crisis of 2008, America is still beset by the depredations of an oligarchy that is now bigger, more profitable, and more resistant to regulation than ever. Anchored by six megabanks—Bank of America, JPMorgan Chase, Citigroup, Wells Fargo, Goldman Sachs, and Morgan Stanley—which together control assets amounting, astonishingly, to more than 60 percent of the country’s gross domestic product, these financial institutions (now more emphatically “too big to fail”) continue to hold the global economy hostage, threatening yet another financial meltdown with their excessive risk-taking and toxic “business as usual” practices.  the banking system as first and foremost an engine of economic growth.