In my discussions, it will be difficult because governments find it difficult to accept bitcoin, but all the same, we are our government in the crypto world
And in what way can bitcoin even theoretically surpass fiat cash on hand? The quantity of funds in cryptocurrency, and even more so in bitcoin, is still so fairly small that even the G20 countries decided that cryptocurrency poses no threat to financial stability.
Bitcoin and cryptocurrency in general cannot supplant ordinary currencies of states or exist without them.
Bitcoin is far superior to all other fiat currencies in price alone.