1. Its influence is limited to how much the countries adopt it and even with full adoption and making bitcoin a legal tender it is still limited. Economies are multiplex with so many influencing factors, Bitcoin as a currency cannot influence that much. It can be used to protect the citizens from inflation but that does not solve the inflation issue in fiat.

2. No. Best case scenario; they coexist together.

3. Nothing can be determined from now without question. The current financial system is set to collapse at a time in the future but no guarantees that bitcoin is what would replace that. We are even more likely to have a different version packaged by the government.

- Jay -