As we can see and it was proven that Bitcoin is just an alternative currency on internet and it is the fact that it just can't replace for fiat. Though we already knew that its popularity is in the higher level and its existence was in the worldwide acceptance at present.Fiat in reality was controlled by the government but digital currency,specially Bitcoin,is decentralized,meaning the government has no power over it.No one can stop the development of Bitcoin,let's just watch and take advantage the benefits that this currency has to offer and always be amazed to its value and continuous growth mostly in the future.