Re: Hang on a sec...
I suspect many of the ATMs round here (a rural area) do make a loss. They are mostly inside small shops and I suspect the shopkeepers tolerate a small loss in order to get the additional foot traffic (I have certainly gone to use the ATM and left having bought several things I hadn't planned). A really big problem with village shops is just getting volume of traffic so they can sell stuff before it hits end-of-life. This is the same reason some are still willing to have Post Office functions -- not to make money but to get people into the shop.
Even a small reduction in charges probably will cause several of those to disappear as the shopkeeper decides they can't afford the fractionally higher loss on already very small profits. Which is a shame as in these cases they really do provide an important service, often offering the only ATM in a village.