I was thinking more of gp's comment "and the first user is an Argentinian bike importer that finds transacting with their suppliers to be challenging"

Wise isn't great for paying suppliers. Their business account limit for debit/credit is $2k, and for ACH is $50k. They have higher limits if you fund with wire, but then we're back at the starting problem again...

And still, you have no way of knowing that the receiving party actually got it. On a blockchain, the source-of-truth "database" is public.