For the people who are dunking on this by saying that historically things have been fucked up:
I think the point of the tweet is that systemic development doesn't stop at capitalism.
I'm pretty sure lots of educated people during the feudal era were saying that it was the best system available and at least they were dying less often than the Romans.
Payment processors are monopolies for online and electronic payments because there is no global infrastructure (outside Chinese offerings) for electronic payments that don't rely on Visa and Mastercard.