Distribution has become "a very significant strategic issue for us," Shafiq Khan, senior vice president of e-commerce for Marriott International, said. Now that airlines have addressed their distribution costs through new deals with the GDSs and by eliminating travel agency commissions, hotels "have become the biggest payer of commissions and a big revenue source for the GDSs," Khan said. "We need to get to "more rational economics" with the GDS companies.

Khan fired the shot across the GDS industry's bow at EyeforTravel's Travel Distribution Summit in Chicago, just as the major U.S. airlines had concluded a round of GDS contract negotiations that locked down their distribution costs for at least five years.

Like the airlines, hotels view the GDS economic model as "very odd," Khan said. Hotels pay GDSs for bookings and GDSs pass some of that money on to their subscribers, the travel management companies. Hotels also pay those same subscribers commissions for those bookings, which often are passed on to agencies' customers.

"Byzantine is a nice word for it," Khan said.

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