Cx is not worried about a pilot shortage, what they are worried about is in having to train all of the pilots they need for the 777 that are coming. If they get age 65 they will not have to train as many and in doing so they will save a bundle in training costs. They have worked out that paying 200 guys Ascales for another 10 years is cheaper than having to train 200 captains, 200 f/o's and 200 S/o (each guys moves up the scale).