It is interesting that you take what I say as optimism. It's like saying I am optimistic about someone on life support. But there are cases of people having miraculous recoveries. Would I bet on them to survive? No, but until the doctor pronounces them dead, I would still try to have some hope especially if they were family.
Not sure what happened, but between compliance issues, legalities, supply of product, greed, and many reasons we may not even know about, it is a futile guess at this point. The dilution they caused was and is my biggest question of concern. I would like to think there was more to it than just greed. But knowing human instinct, it seems the most likely.