It's not a take over or changing Fiat with digital currency, it's only that many of us is making use of hobby nowadays to use crypto in some of their transaction between traders.
We all know this thing that all of us thinks of the best thing and that all of us go for a thing which seems more suitable to us and that in which there are likely chances of having something better. Digital currencies have no doubt helped so many people in knowing and understanding that this form of the money is far better than that of the traditional paper money and that if you will go for it, you will be able to change your life in a positive way.