I'm trying to point out that most US people are unaware that days for selling a transaction should be outrageous, yet it's the norm.

And a wire, which is as close to sepa as I think you can get, costs 10s of $ each time.

Basically, the international business problem is real. The Argentina case is mostly lack of a domestic stable currency though. These are legit use cases, fast and cheap transactions aren't.

Fast and cheap transactions are legit use cases.

If you actually offered those US businesses with instant, verifiable transfers that cost nearly nothing, do you actually think they wouldn't move to that?