Knowledge is power.
However, the machinery should see that so many financial scandals have taken place in the past resulting in heavy losses incurred in the past and hence they should stick to the regulations applicable to the banks.
How they are managing that much cash?
The bank officers may be making a glue in the hand of these big people and helping them. But a common man can't manage the bank officials. So they can't be allowed to draw much cash.
Another point is the performance evaluation of the branch and the branch officials will be more dependent on the cash they are mobilising and the transactions. That point also will be taken by the big people by opening accounts in the banks and doing transactions also.