The world can go to crypto but it will take a while. I do not think it can be soon because not all countries have heard about crypto nor blockchain. It will take much effort to achieve this.
This is true. It is far from reality as of today. We can focus on the positive effects the bitcoin can offer as of this moment. For now, we can enjoy using bitcoin with some of our transactions. Slowly bitcoin will reign around the world and that is the time that maybe the banks will be gone.