If KAL couldn't fill those seats during this time where the disparity between Pilot supply and demand was so much in their favor, they definitely won't in the years to come. I see a major re-adjustment in their growth plans.
The market is turning. Everyday, there is a new airline with an ad for Pilots. Airlines have merged and consolidated. Age 65 is around the corner for many in the states and EU. Even if there is not growth in these regions, retirements will drive employment.