Dont doubt this.
But when I examine Bitcoin and other crypto coins, I see it not as a replacement of money, but just as a replacement of the central bank money printing. Because eventually, we'll all look for a place to keep our money safe (a bank) and someone to give us a loan on occasion.
It will happen.
They are just afraid to swallow the truth.
It became the love for tradition or those who just don't want any change in their lifestyles.
I understand it. In remote rural areas you could see them still leaning on fiat but you could also see they are now changing using smartphones and computer.
That just means they are also moving and trying to follow with anything that is new.
It could be done, it is just the matter of when.