I believe that hallucinating the missing gratification is linked to psychology of addiction. That is one is addicted to fill up the space where absence should be. Yet, one needs more than survival, eventually one deteriorates without emotional truth. If it is lacking or deficient, the personality deteriorates. With emotional truth one fears falling into nothingness.
Addictive scenarios keep the personality out of range for the time being.
Further complicating the situation is the deficits of being human. Bion focuses in his work on deficits of being human. That is, we do not have the adequate resources to process too much stimulation. We are not built that way. The infant's being is threatened by the onslaught of stimulation for which he lacks a frame of reference.