Blockchain can be used to pay everything as long as there is 3rd party who will able to create a bridge between merchant stores to the blockchain. Binance has made it happen. You can spend your crypto balances to pay in the merchants stores that have been partnered with binance.

Crypto has been changing the way people to send their money at this moment. The financial service will be available as long as there is a company that is supporting it.

This totally needs cooperation from the centralized exchange site to make it happen.