So how did the bank screw up like this? They deal with so much money, you and your grandchildren could make a living from the rent they pay for a single branch

So how did the bank screw up like this? They deal with so much money, you and your grandchildren could make a living from the rent they pay for a single branch office. Yet they are unable to purchase the skill set and competence to stop giving people unbalanced credit or stop international fraud at scale.