We all believed that bitcoin can go up again, but I don't see it raising over Fiat system. Most countries (specially 3rd world), relies on fiat in order to function. So we won't see fiat getting overrun by crypto. They will continue to flourish together with crypto market.
Its gonna be slow, remember bitcoin is just on its early stage, we are barely 10 years, so there's going to be a lot of things to change in the next 10 years. We don't know, we might see adoption coming, but stopping bitcoin is a different thing. Government can't stop it at his point.