Like I said. A half baked idea. It that the Islamic world has the numbers to compete with woke. So anything meant to serve Muslims (like banking) might be big enough to serve as an alternative to paypal. Beyond that I know jack shit.It's not about the banking, it's about the payment networks. An Islamic bank is not magically immune from credit card blacklists.
Hawala isn't done by banks (and these days, heavily regulated). The UX is basically the same as heading over to your local Western Union branch; much worse than cards.Money transfer is one aspect of the general class of activities considered "banking." Any descriptions of the general concept of "Islamic banking" discuss it.