Sure, people have been saying that for a while now and it hasn't materialized. What exactly is going to change that is going to make crypto able to be used like fiat currency? What exactly is in the works thats going to make that happen? Because it very obviously cannot be used to replace fiat currency currently. I mean, a lot of people are only holding cryptocurrencies because they think the value of the coin in US dollars is going to go up. "This currency will suffer from really bad deflation" is a pretty bad selling point for a new currency! So whats going to change?

Actually, there are quite a few things you can't do with crypto that are trivial with fiat, like entering into transactions without power or internet, or paying your taxes.