Originally Posted by Billiken
I've always wondered how the heck the airphones pay for themselves (equipment, additional weight on the plane, etc.)
IIRC, I've used them twice in the last 14 years of biz travel.
Sunk cost. GTE installed them years ago, and I'm sure they lost money. But now that they're on the planes and more reasonably priced, it's not outlandish to believe it would be more cost effective to leave them in rather than yank them out.