Well, I already did work/live away from my home city (8 hours flight time from home), and I still do, although a little bit closer now.
Some people can't do it, it is indeed pretty hard for yourself and your family (especially if you have kids) and if it's the first time you have to change your lifestyle so dramatically, but you won't convince me that the vast majority of the pilots will not relocate if they really have to. Europe is getting smaller and smaller, and unemployed pilots are ready to do anything to get a flying job... and to keep their house and family together ! Yes, a few won't, but most will. You can't justify a so-called shortage with that. That's what my experience tells me (would the Belgians be an exception, and if yes, why ?).
Post a job advert here, we'll see...