More to the point there are so many unemployed because it is essentially a process of self selection to head down the ATPL path. Few if any do any sort of aptitude testing. Fewer still look themselves in the mirror or ask friends etc how they come across. How many ever invest in any sort of course on preparing for interviews and getting their CV up to a professional standard?
Sadly there are many able aviators out there that will never get a job simply because their face doesn't fit. One quick example.... some tw*t I saw the other day was in for interview wearing a cheap pair of chinos and a polo neck. All the other wannabees were in their best suits. He didn't even stand a chance and will probably not know where he went wrong as in this day and age we have to cover our a*ses in case it is seen as discrimination.