I think that we will see as much more retails will accept crypto curriencies as a payment method in the closest future. It will became more realistic as we see services for merchants which help them to accept crypto coins and receive fiat money at their bank accounts. It already doesnt look like fantastic.
The is not retailers that they are accepting it as method of payment because if the Start selling items through bitcoin SO how they will purchase items from their supplier. So before retailers the manufacturers are required to use bitcoin for trade.
Before retailer / supplier for retailer
Before supplier / government
So if government accept it as currency then supplier will use it for import of raw material after manufacturing supplier will take bitcoin from retailer and retailer will offer the goods in bitcoin. Government will pay wages in bitcoin who will purchase items from retailer. retailer will make payment for supplier and supplier will give tax to governments in bitcoin.