Frequent flyer programs hold an important place in the history of customer loyalty. When first launched, they were the genesis of points-based systems, which means that they’re responsible for the contemporary loyalty paradigm. With frequent flyer miles, airlines were able to give consumers an incentive to fly with their brand, even if the particular flight that the consumer was looking at wasn’t the cheapest or most luxurious. If you flew with a competitor, you were blowing an opportunity to accrue points that could be redeemed....