I'm not sure it's a wonder at all. The cost of replacing an operating system for all your ATM machines involves rewriting your application for the new OS, perha

I'm not sure it's a wonder at all. The cost of replacing an operating system for all your ATM machines involves rewriting your application for the new OS, perhaps modifying it for your ATM HW, testing it and deploying it. It's a considerable cost and to gain what exactly? I don't think it would have made any sense.