Of course the outrage comes from the fact that corporate structures offer so many layers of plausible deniability. At the end of the day, we would have to be fools to believe that billions in money laundering or price fixing are happening at these banks orchestrated, as the executives would have us believe, by a small group of malevolent peons expertly covering their tracks. It's just common sense that lots of people know what's going on and turn a blind eye because it's good for business and there's virtually no chance it'll actually get pinned on them.