Because banks making shitloads of money are always in financial trouble and in need of a bailout
They took out the money in the form of unbelievably generous compensation packages and left the bad debts behind.
What? You think these peple wouldn't knowing piss away 1.4 TRILLION dollars of somebody elses money if they could get paid 10% of it by doing so?
Think again.
That's scenario the poster child of what tragedy of the commons means, folks.
You think they're building bridges to nowhere for fun?
They're building those things so they can get their share of booty.
You can find examples of this sort of shortsighted goofy corruption in every public budget in every government in America.