Among the most powerful, there's always anarchy. But even this is beside the point. The point is that in OP's scenario, there's a bank doing investments, and a

Among the most powerful, there's always anarchy. But even this is beside the point. The point is that in OP's scenario, there's a bank doing investments, and a person doing investments. The bank had their funds in their usual way, and the person outright stole the funds. That makes a big difference, when talking morality, but not because of the investments, but because of the source of the funds for the investments.