Disney won't release Song of the South to DVD...although it has appeared in various regions on LD & VHS. Song of the South is an acclaimed film which has been noted for its use of mixing animation with live action. It won an Oscar for Best Song (Zip-A-Dee-Doo-Dah) and an honorary Oscar for James Baskett for his portrayal of Uncle Remus. It also brought to lie numerous folktale characters such as Brer Rabbit, Brer Fox and Brer Bear.
Disney won't release the film because they claim (and I'm not sure this has ever been in any "official statement") that the film represents a negative stereotype of blacks. While many feel this isn't even true and that Disney has released other ethnically-sensitive material such as Peter Pan and Dumbo, SotS could be given "Disney Treasures" status and be given an educational introduction explaining the depiction of black lives during the reconstruction by a noted film historian or prominent black entertainer.
This all just came to mind when I read the line of your post that I quoted above. Disney is definitely a companay that understands how to best present its material to make a profit. There is a rather sizeable market clamoring for SotS...yet they keep it locked-away in "Vault Disney" with many of this generation never having had a chance to see it (except though illegal--or complicated--means).