I do not agree. Actually, Bitcoin and fiat money is a coin with two sides, they both exist but in a different way, meaning that each has his own way, both need each other. What would happen if Bitcoin without fiat money, to be exchanged for what? Is the community as a whole are familiar with and use Bitcoin in everyday life as a means of buying, selling and exchange? So I think it will remain Bitcoin as Bitcoin and fiat money as fiat money.