IF every country launches their own cryptocurrency (that's a big if), the most likely scenario is Bitcoin become the next gold. Really. If the governments somehow have the urgency to change their fiat to crypto, that means they believe in the blockchain, the logical consequence is all countries would be competing to reserve Bitcoin as much as they could, just how they did with gold before fiat become popular. There could be a possibility that they peg their crypto to Bitcoin too, confirming Bitcoin as the digital gold.