You may be ( or are ) right : however ,I think that some money get back to BFW ...I believe (but I'am not sure) ,ERLA built Bf 109 even before the war ...
I got it : "Wurden zur erweiterung der Produktion Lizenzauträge hereingeholt.
..........1936/45 12000 Me 109 ......."
from Kens/Nowarra "Deutschen Flugzeuge 1933/1946"