> "because they're vastly more likely to be unbanked"
This is not true in the US, where your debit/bank card is also a VISA/MasterCard fully usable online. Even people with zero credit can easily spend money online. If you have a bank account in the US, there are effectively no barriers to spending the money in it, online.
Walmart and K-Mart are "fixing" this with free payroll check cashing and rechargeable debit cards. One uses MasterCard and the other uses American Express.
This is not true in the US, where your debit/bank card is also a VISA/MasterCard fully usable online. Even people with zero credit can easily spend money online. If you have a bank account in the US, there are effectively no barriers to spending the money in it, online.