Zero chance regulation will do anything. You're locking the barn door after the horse has already gone on to have a family and kids and die of old age. There is no politician who can withstand the sheer incentive power of being in office.

Incentives rule the day. Short of making their lives absolutely nightmarish--which you probably won't do since they're behind thick layers of aides and interns who will take abuse so they don't have to--there is not hope of this changing in the direct ways hoped for. Something systematic has to fail in an unexpected way that renders old incentives inert.