It's not so much that they mind the competition in the ATM business, it's that the regulations on handling large amounts of cash have gotten more and more involved, to the point it's just not worth it to them to do it.
He's had to change banks a number of times over the years, but now he's with a smaller local bank that he has a personal relationship with the management. Still a hassle, but at least he can run his cash-intense business.