Earlier quoted context omitted.
I don't buy this because it discounts the high costs of cash controls. Cash has high costs that likely make electronic forms of payment competitive. You have - Employees skimming the till; - Theft insurance for a safe, the nightly amount in the safe - Managers balancing the cash registers with change/safe - Armored trucks picking up the money (2-3 men guarding the transfer) - Banks processing the money - Employee tim…
If this was the case then merchants would happily encourage people to use cards rather than cash.
The big savings come when you have zero cash to deal with. Then you have no counting/change/armed transport/security issues at all.