Not to mention that in centralized systems there's an ultimate authority who's willing to sacrifice a little of their profit as a cost of doing business in order to make sure that real customers that were scammed or had an issue of some kind have a good experience.

And yet even with an essentially centralized service like Zelle, the system is rife with abuse: https://krebsonsecurity.com/2022/10/report-big-u-s-banks-are...

Centralised systems seem to trend towards something like a protection racket.

... except when the bad actors are the central authority.