I do not think it is a threat. It is just a tool to improve our society. Bitcoin helps us to do business fast and not to depend on institutions. It just another option. Bitcoin has its own path. It has no country to support. It is meant to be a global currency. Therefore, other national currencies have not to fear. I do not believe we will all use bitcoin in the future as one currency. Many people think it will happen but it will take time. Banks in the future will integrate bitcoin and use it as well. All in all, it is not a threat to the financial institutions. It is just an additional option to improve business and the economy.