Ok, so let's focus on the underlying idea, without the "Facebook is trying to rebrand their evil brand" cruft. Basically, I think the underlying idea is valuable - low-cost, fast, reliable, accessible money transfers - clearly something missing right now in this world, even for the "global rich" (citizens of first-world countries), let alone for the "unbanked". It could even scale even more to a money store but that'…
In the UK, I have low-cost, fast, reliable, accessible money transfers. Basic bank accounts are free, and come with reliable free instant transfers to any other UK bank. That may not be reality in all countries, but it is in many. That's quite a high bar for rival payment methods to clear, but I think the main problem for corporate currencies like this will be rivalry from government issuers. Governments jealously gu…
What are the problems with sort codes and account numbers? Are you after binding the account to your identity like Australian PayID?