I honestly don't think it'll happen, certainly not in 15 years... In 100 years maybe?
Yeah I also agree with it, bitcoin can't replace dollar for to short of time. But maybe in 100 years from now will see.
Yes, no strong support from big countries will make the future bitcoin difficult to survive for a long time, let alone to turn the dollar which is the world's strongest currency, I'm never sure bitcoin can replace dollar forever.
No this cannot happen at all.Dollar is an international currency.Dollar is very stable and all the international transactions are being done through the dollar only.Dollar does not need any internet connection to use it unlike bitcoin.Bitcoin is very volatile too.Bitcoin is not even legalised in many nations.It is even banned in some nations.Dollar is a physical currency.Bitcoin is decentralised while dollar is under the control of the central bank.So the government will try its best to maintain the integrity of dollar.