John Straw, senior consultant at McKinsey, said: "Assume that someone has actually produced an effective blockchain point-to-point financial system. This will be a truly scalable loan system, and we will no longer need banks, which means we will have no central bill exchange. So, no tax is required. So who pays for the national health care system?” He also said, “The blockchain makes transactions invisible to taxation. This is why France and Germany basically ban Libra. In many ways, the blockchain is a 'democracy killer'."