He states that the witch symbolizes the feudal system with her greed and treasures. When the children kill her, the story shows the "hatred which the peasantry felt for the aristocracy as hoarders and oppressors" (Zipes 1979).
Even after you put them into greed catagories: greedy for wealth, for food, for lovers, for status, for recognition etc. One entire line of Western folktales is about two sisters, one of whom is greedy (as is her mother) and--in some instances--ends up with a mouthful of toads.
This is where the witch addresses what is left of the characters - reminding them of their greed, and how they are always wanting someone to blame for their problems. "Told a little lie, Stole a little gold, Broke a little vow.
The annotations for the Golden Goose fairy tale are below. Sources have been cited in parenthetical references, but I have not linked them directly to their full citations which appear on the Golden Goose Bibliography page.
Sometimes she felt as if it would be impossible for her to get on at all, but her greed gave her strength, and at last she arrived at her own door. She sank down on the threshold, overcome with weariness, but in a moment was on her feet again, fumbling with the lock of the chest.
The following tales are similar to the Fisherman and His Wife fairy tale, AT-555. I have included the English language tales of this type which have been gathered by title by D. L. Ashliman in his A Guide to Folktales in the English Language.