My Amazon app has a section of "virtual dash buttons" down the bottom with only consumable items and they all purchase directly with one tap
Turns out it's also possible to intentionally navigate to it: app menu (top left "hamburger" icon) -> "See All Programs" (under "Programs and Features" group in menu) -> "Your Dash Buttons". And the UI looks just like dash buttons. With buttons that say "Buy now" rather than adding to cart.
It'd be great to have the ability to somehow pin it in a more prominent / convenient location if I were seriously planning to use it.
I say half surprised. They’re probably avoiding Apple’s 30% cut or something
You can use Google Pay (note no "l" in second word) for physical goods, although I think you can collect your own payments if you prefer.