haha, "pony express" of the wasteland, running large quantities of money from one bank to another, good idea.
Transfering money from bank to bank would need a lot time + it's not even sure if the money will ever get to the other bank.
If you want to make enemies, try to change something.
See it as a bank system in wild west and ignore the fact that radios can send over the whole worldmap in the game. Why should I trust some random guy who is coming into my bank and tells me he wants 1000 caps from the bank, because he might have an account with that amount of money in some other city which is many many miles away?I would kick his ass out of the building and laugh at him.
Yeah, and then, some weeks later, you get the info that he actually didn't got a bank account in the other town and he was fucking you over.
He means, like now, your actual physical money doesn't matter. The paper money we carry round now are only promisory notes for the value printed on them for example. You pay your caps in VC, head to NCR and withdraw the same amount of caps from the bank there. Your account is adjusted to reflect the withdrawal and the amount of caps in the bank globally remains the same.
theoretically the modern economy is based on bankrupt banks