I doubt very seriously that this will ever happen. I don't know if code or video games have a public domain time like music, TV and books do but that is probably the only way you're going to legally get the source code of these, or frankly most games. Of course you, I and probably 99% of the people on this forum will be dead by then. Ultimately they're still an intellectual property owned by a corporation that could at some point profit from it.