"Most engineers joining didn't know much about why the one-click checkout industry has the potential of billions." So why isn't this a standard feature of every shopping cart program, including the cheap ones? The complicated part is that you need "undo", valid for a while after ordering. That's what makes one-click buy feel safe for customers. This complicates inventory management. But you really need "undo" for an…
1) Carts are slow to evolve but they will.
2) Bolt/Fast contain user based information, consumed from their use on other sites. So there's a 'network effect'. If they've shopped at ABC.com before your store, then you already have their CC data ready to go in their car. Sort of like Single Sign On but for carts.