Well it's not like the Royal Commission can bring down the Watchtower even if they wanted to, but I think they may be able to force them to do things differently, at least in Australia.
And it does shine a light on the religion, something that is not good for them, as they have operated in secrecy for so long. No one thing will bring down the Watchtower, but the more negative things that are in the media the more people will question things.
As far as conspiracy theories, I think people believe them because of confirmation bias and because it makes them feel smart because they have special knowledge and because it makes the world seem simpler and more understandable, even if it's in a negative way. Unfortunately the world is not that simple, and there is no one shadow group pulling the strings, it's complex and chaotic and no one group is controlling everything and there are no simplistic answers.
Think about it, if the "Rothchilds" were controlling everything and were protecting the Watchtower, why didn't they prevent the Royal Commission from happening in the first place? It wouldn't have been that hard, no one knew anything about JWs and Child sex abuse a month ago, Now that all this is out in the open it will he much harder to prevent any negative repercussion to the WTBTS.