The bitcoin could win at the end of the journey but right now the dollar is just too big to do this.
It would take many years to achieve this mission.
The bitcoin or other crypto currencies might win in a few decades. But the fiat will still be there for long time.
I think it's hard to bitcoin can win against the dollar or fiat. I'd be a little unsure if bitcoin can win at online currency
but to dominate in payment or currency offline. I'm not sure bitcoin can match fiat or dollars.
we should recognize that. our own as bitcoin users still rely on fiat or dollars