I really did not understand what you are thinking here, why would anyone in the financial market wanted Satoshi to be killed. The mystery of the creator will continue until and unless someone come up with a valid explanation with the signing of the earlier known wallets and if that can be proved we can assume that the creator is back and the government cannot do anything about that as long as he did not cross any law.
Not to be killed in my perception, but to become compromised because if we are satoshi, and we know all the future of what bitcoin could be, it is our personal security to consider hiding from the public. In addition, they might talk to Satoshi, offers a huge amount of money to control bitcoin. So, to avoid other external influences, it is the best decision to stay anonymous and let bitcoin determine its faith without him.