A lot of people don't have access to the knowledge, technology or economy that exists in what we know as Blockchain. Traditional businesses don't take advantages of every tool created to make easy transactions between people and commerce. This is because even with the speed, trust and transparency that could provide the use of cryptocurrencies in the regular commercial operations, it is still being complex, most to all to those who don't have the tech knowledge.
To send money through a cryptocurrency wallet, it is necessary to know the destination address which generally is a complicated alphanumeric digits that are very difficult to remember it. the confirmations time, the need to have a technological device to make the transaction and the intricate process to convert cryptocurrency to FIAT, makes that adoption of payment gateways based on cryptocurrency didn't got mass.