Airlines operate like banks. Their rewards points are more valuable than their primary operations.
Most flights and hotels aren’t usually full, allowing them to sell limited volumes and still profit.
Travel is something people are often willing to pay for over time, even with interest.
Travelers are typically high spenders, and networks profit from swipe fees.
Travel is a significant expense that people save for, making points more attractive.
What other industry would be a suitable candidate for similar rewards programs?