If the metaverse becomes a reality, what will be the significant roles of crypto in its economy?
If crypto such as bitcoin, Mana, Sand are used as means of transaction in the metaverse what will be the reaction of the government?
Depends on the one who build that metaverse. There's obviously going to be variety and most likely that developers will have their own idea of the currency that they will use in their world. Unless developers can solve the fees and transaction speed, then I can't see Bitcoin being used in a metaverse (assuming that we have the tech to do this with the current state of Bitcoin).