I think it is possible that people will be using digital currency as a payment to buy goods, paybills and many more in the future. But i think not all countries will go cashless lile china because they hate QR codes and crypto, so it will take a lomg time before everybody will be using digital currency.
I can't see that happening in day to day goods exchanging. It could be a case however when two merchants from different countries were to make an exchange and make the payment simultaneously. Having said that, It could be a reason to make a crypto payment. I don't see that there is crypto that can serve daily transactions between people. Bitcoin is powerful but I see it more as a way of storing value.
That is what I have noticed now, people won't exchange their bitcoin as payment because they think that much better to store and wait for a better value than having transactions via paying bills and etc. Well, we could not blame them because we know that bitcoin was too volatile and may have a profit if we can patiently wait. However, we have a different perspective view on bitcoin regarding payment or investment.