I imagine the internal man hours spent reviewing and responding to the claim then raising the payment would have cost thousands.
Speaking of dumb processes, in the 80s I worked for the IT dept. of a large retail chain where I was involved in developing a system to manage selling price changes on individual products. This involved every store in the country doing a stock take and sending the results back so the total stock value could be adjusted, then new signage for the shelves had to be made and sent out, and the EPOS system updated to reflect the new price. We quickly spotted that the labour costs involved in doing this typically exceeded the maximum possible revenue if all stock sold as a result of the price change (which of course never actually happened) - they would have been better off destroying the items or giving them away. We felt obliged to mention this and were firmly told to mind our own business!