KI used to bank with a small credit union in Sunnyvale, CA - it was a tech credit union (cant recall the name of it ATM)
But they used to have a sheet they posted on the wall near the tellers - this was in 2007-2009 at the height of that particular financial fraud collapse (lehman, etc)
The sheet showed how much the bank was making on over draft fees - and every time I was in the bank I would check that number - and it was stunning to see as deeper we got into that recession, how much that number increased.
They were making about 500k per month on _overdraft_ fees alone...
That said a lot about the state of peoples finances alone.