When Bitcoin rises, it really means that the dollar is going down. If Bitcoin goes to $2-million, the dollar will be in so much trouble that the whole state of the nation will have changed. Just look at what is going on in government right now with Bitcoin at only $100,000.
Nah, they will be good.
They are two different worlds, and BTC would stay an alternative for everyone to use, albeit the one that is becoming better, unlike the fiat.