A long time ago, Mozilla had a prototype of this, but it never took up, in part because there was no standard for web payments. Then Brave claimed to be working

A long time ago, Mozilla had a prototype of this, but it never took up, in part because there was no standard for web payments. Then Brave claimed to be working on this, I don't know the status. I believe that Chrome had someone working on this, too, at some point, but the project vanished.