You see this a lot with airline mergers, in which the two airlines each have a credit card issuer, but when they combine, they have to pick just one. (creditcards.com)
He's been in the room for more or less every major airline merger and bankruptcy restructuring over the past few decades. (entrepreneur.com)
Typically in airline mergers your credit card will be converted to a different product. (pointsmilesandmore.com)