ADJ [usually ADJ n]（付款）作为恩惠的，非出于法律义务的 An ex gratia payment is one that is given as a favour or gift and not because it is legally necessary. （付款）作为恩惠的，非出于法律义务的 [mainly British, formal]
Otherwise, they would not feel compelled to make ex gratia payments to customers they have wronged.