95% of the world's money exist in digital form already....
What is Fiat then? Cash = the matter of time, when it will be totally gone. 
Fiat, the money govs printing? Banks creating? 
And then crypto = the money "some programmer" creates (pre-mined coins). Or mineable cryptos (BTC, BCH, LTC etc etc...) . 
I've been in the space for some time now, and than more I dig, than more I see some "fantasies" around the space. 
Sorry guys, I didn't mean to be that pessimistic.