There are good and bad for this it will cause corruption, governments wants to be on top they want to gain power and to get some taxes that why i have the civilization now a days. hope for the next 10 years it would be different.
I don't see it as competition honestly. Governements people care about their national currency. It is important they can support it. For international trade i see bitcoin being the main currency. Especially f.e. If the monetary fund will support it.