I thought the same thing too, when it was announced. But I suspect, in addition to the price, that not being able to buy a medium or long bed version also harmed fleet sales. The short bed being the only option is probably a pretty big limitation for groups who are buying them as fleet vehicles.
Just speculation but maybe the fact the world is in an oil glut right now and with the prospect that Russian oil could re-enter global market causing even more glut caused Ford to believe that gasoline will remain fairly cheap compared to 2008 era for the next decade.
