Don’t be afraid — this is the message I have for travelers who may be concerned about losing the ability for comparison-shopping because of the war between American Airlines and online travel agencies. The longtime Global Distribution Systems (GDS) model is about to change, and many people stand to lose lots of money. That’s why they are trying to scare you.

For decades, the GDS model has been the norm for distributing airline data and booking flights, which has given the three main GDS companies in the world — Sabre, Amadeus and Travelport — enormous power. You might have heard that American was on Sabre and United on Apollo, which is now part of Traveport…