Another case from a while back, the subject of an ombudsman column in Condé Nast Traveler, involved a couple that flew Air France business class and suffered a malfunction where the seats would not recline. They wanted a refund, but the airline refused saying that their ticket did not just pay for the recline function, but for the service and other amenities. I don’t recall the exact remedy, but I think the ombudsman agreed that a full refund was not justified, but there might have been some more moderate form of compensation.