Or, bail them out (emergency liquidity, QE1, etc) but also nationalize them at least on a temporary basis so that as they recover, the profits do not go to private pockets but rather are socialized.
Not that I've researched it, but I've read the auto manufacturers turned things around and repaid the bailout because they are in the business of producing things. It seems like the business of banking has it's own culture, if we don't recognize what they're about and say no next time I will be out rioting.