The "sagging interest rates" are a product of Fed monetary policy, and much of the fee-generating behavior you describe has been motivated in some part by the Fed's monetary policy too. But please don't let that stop you from blaming the banks.
"The U.S. Government does not own shares in the Federal Reserve System or its component banks, but does receive all of the system's annual profits after a statutory dividend of 6% on their capital investment is paid to member banks and a capital account surplus is maintained."
So part of their profits go to member banks. Who are the member banks that profit from these dividends?