I was in a fast-food restaurant when their credit card processor went down. They continued to take orders and if the customer didn't have cash the food was free

I was in a fast-food restaurant when their credit card processor went down. They continued to take orders and if the customer didn't have cash the food was free. The cost of poor service and losing repeat customers was greater than the reduction in profit. Now, this was a semi-independent franchise owned by a local family. Across the street, the chain big-box store had the same thing happen and they put a sign on the door saying "cash only".