LIBOR manipulation (which many banks confessed to), FOREX manipulation (ongoing scandal), Goldman's Aluminum debacle and other commodity rigging. These are jus

LIBOR manipulation (which many banks confessed to), FOREX manipulation (ongoing scandal), Goldman's Aluminum debacle and other commodity rigging. These are just the ones I'm familiar with. I believe it's 80-20. 20% of banks profits are rent-seeking behavior. If we compare this with megacorps in general I'm sure some of their bottom-line is also from rent-seeking behavior. Edit: additional thought: Rent-seeking is child's play when you consider too-big-to-fail, too-big-to-jail.