Originally posted by: Swallow Your Soul
The main one would be because they don't want to get sued. Licensing HAS stopped groups working on projects, they did on GitS, so LMF took over, they did on Gantz, so W-Dreamers took over etc etc. I don't think I've seen many AonE subbed shows, but from what I heard at the time GitS got licensed, they have a policy of not working on licensed anime. So do other groups.
They do work on licensed... heck almost all their projects they've worked on got licensed and they continued...

only exceptions have been Bandai and ADV licensed series... hence why they dropped Gundam SEED, Chrno Crusade etc...