Not reading 7 pages- I read the first page and skimmed the last. Jagex cited the law on unauthorized access, not on stolen property. Jagex only used the law against the hijackers for accessing the account unauthorized. They did not use the law because anything was stolen. So saying that they can't use the law here and not there isn't applicable here. They used X instance of the law, where X instance of the law only applies to the X incident. But you think they used Y instance of the law because of a Y incident, which definitely isn't the case. So no, they don't need to give anyone anything back. They can't reliably monitor all items at all times and all players to see what goes where and how it got there, so they just say no to everyone.