The news is glum for Worldspan, once the star GDS in the online travel market, and it cranked up the rumor mill at the recent PhoCusWright Executive Conference in Hollywood, Calif.

Worldspan has long been the rumored target of acquisition by Amadeus, but the attention has now shifted to Travelport's Galileo. During a panel discussion, Travelport chief executive Jeff Clarke said consolidation in the GDS industry is "inevitable."

"We're the only one with significant scale in all three major regions of the world," he said. "With limited differentiation and fixed costs, there is no economic reason to have four GDSs," he said.

His remarks were similar to those often made by Worldspan chairman Rakesh Gangwal, who has all but posted a "For Sale" sign on the company's front lawn.

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