They currently don't? Why? Isn't that completely insane? How is that different from buying a music CD with the restriction that it may not be used commercially, declaring bankruptcy, and selling it without that restriction, so the buyer can make and sell copies of it? I.e. it's using bankruptcy to create from thin air and sell permissions that one was never given.
Can I, in the process of personal bankruptcy, sell information I've signed an NDA on? Can I sell genetically modified seeds that I signed a contract forbidding me from re-planting them, now without the re-planting restriction?