> Without chargeback or a similar mechanism it's "pay and pray".

No true. You think if you get fed poison at a cafe you have no recourse if you pay cash, like you somehow waive all your rights as customer?)

What you are talking about is not "some recourse". You have legal recourse. But you mean specifically "get my money back". In many ways it is good for the actually shady dealer because being sued is worse than one chargeback from one wise guy & getting to keep swindling all the others.

> I'm talking about having at least some recourse against fraud and at least some attempt at resolving disputes.

And making it decentralized would kill exactly this among other things. Should I explain how?