Because I am old, I remember what banking was like before it was improved. Bankers called it It "The three threes" - Borrow money at 3%, lend it at 3% more, and be on the golf course after 3 o'clock.
We were told that ATMs would make everything more convenient, faster, more efficient and cheaper; and our charges would come down. They lied.
We were then told that going on-line would make everything more convenient, faster, more efficient and cheaper; and our charges would come down. They lied.
Originally banking required lots of staff, paper, ledgers and competence - It worked. Then it required a few less staff, who knew how to use 3270 terminals - It still worked pretty reliably.
Now that everything is electronic, and IT is the core of the banking business, how come that all of them are unreliable and incompetent? Oh, that's right they are friends of whomsoever is in government, and are "Too big to fail".