These buttons are super interesting in concept as they exist to serve that immediate gratification, and are designed to live at the place where the need arises. This removes all friction and definitely optimizes the commerce flow to one tap short of fully automated.
That said I am not a consumer of any of the products listed and won’t be using Dash buttons any time soon.
What would be really great would be the ability to create your own Dash, that is link a dash to a product of your choosing. A customizable Dash Button? Now that would be a win!
Amazon’s crazy Dash Buttons on sale for all Prime members
Now, Prime members can press a physical button to get diapers, razor blades, and bottled water on demand.