Exactly. Why don't they benefit from country's youth systems? Why don't they bring young players that have prospects of development in NT players? Make long-term contract and not pay 10-11 transfer payments to other countries. They could easily get the young players from other academies like the rest of clubs do. When younger player develops into NT player - thats when club can make name for itself.
Aachen is only a small club...there never was manpower, financial resources and quality in staff to build a good youth-academy. During last seasons, the Bundesliga-team hardly survived (also in financial aspect)..so, the priority at the moment is to build a decent Bundesliga-team for the long term..hopefully in near future, there will be the opportunity to invest in youth-academy.
Concerning transferring promsing young players from other clubs: until current season, Aachen never was succesfull, so not attractive for youth nt-players from other clubs.