You to factor in foreign grosses though. Even if it doesn't make back it's money doemstically it still has overseas markets. If you ask me, I think Lucasfilm is just going to keep rolling on with their original plan. I also doubt that they really expected TPM3D to be a Lion King level success. AOTC will definitely be a problem for them, but I doubt they'll do anything other than agressive marketing.
Of course, what they should do, is re-edit the film to make it better.