I am not so sure they won't find pilots for mainline. It wasn't a problem when recruitment opened in 2013 on a terrible pay. There is more to it than roster and pay. Proximity to friends amd family, particularly relevant when about to start a family. Some Scandis find themselves home abroad, many come home when the opportunity arise.
Yes, in 2013 I'm sure they did. Now its 2018 and the aviation world looks very different. Let's see.
CP