Well it would be a thing of celebration eventually when Bitcoin emerge as the world currency, cause this is exactly what we've been praying and hoping for so having it happen will be a plus to the crypto community but right now I know it's undergoing the booting process such that it tends to grow gradually till it gets to that points. And what will definitely make it possible is it's adoption and usage with time.
Adoption is going on already, the only thing holding back is just regulation that causes big corporations to be hesitant on adopting bitcoin whether for their business or just for diversification.
The good thing is, I've seen more and more e-commerce sites accepting crypto, the big players in cryptocurrency seems to want to increase adoption through real usage like spending.
If thing keeps up, maybe you'd see bitcoin becoming world currency by 2030. A man can always hope.