Were they? From what I recall people were saying, "Why isn't this catalog a webpage yet?"
I'm not sure if buying a bunch of little buttons and plastering them all over my house is necessarily convenient. Convenience is largely counter-intuitive. For example, you'd think everyone would get their groceries delivered at this point, but most of us drive to the grocery store. There's a larger convenience in having all these products at your fingertips, trying different brands, shopping for lower priced items, seeking deals, etc. You lose this flexibility with the Dash. Its also really ugly to have what look like ads plastered all over your home.
I'm surprised we all don't have a home robot with enough computer vision and fuzzy logic to figure out what we're low on and produce a list of items that need to be bought that week. I feel like some kind of robot revolution that was supposed to happen never did, so we're finding weird automation solutions that don't really work. I imagine this is what is was like when computers were rare and you could only use the ones at work because home computers weren't a thing yet. Smith-Corona kept making better and better typewriters but you really just want a word processor and printer.
Ah, Google's ill-fated attempt to scan all catalogs and put them online
Even if I find this idea wasteful, I think amazon does the right move with just experimenting.
A button that costs somewhere between $5 and $10 might result in something like $240 worth of sales over its lifetime. (eg. 1 sale per month x $10 sale price x estimated 24 month lifetime)
Seems scalable to me.
I think the Amazon Fresh Direct concept mentioned elsewhere by mason55 makes a lot more sense. Stuck to the front of my fridge I want a little scanner--one on my fridge, one by my cabinet, one in my laundry room. Running something across the barcode scanner when it's low/empty is as easy as pressing a button, and doesn't mean I have to put a button on/beside every single item, especially ones that move around my disorganized shelves.
As someone else mentioned though, think of it as "Dash, the physical button" + "Dash, the API". The API is probably the long term goal, the physical button is just a (temporary) drop-dead simple API client that people can use today. Amazon is likely betting on smart-fridges/-pantries/-homes catching up in the future
Edit: in the near-future, I imagine Amazon adding a touchscreen (so it's not product specific) without adding much to BoM. They can also charge manufactures for on-device screen-time (who doesn't like ads that convert to an immediate sale?)
Trying to add a changing ad screen to this would kill the battery life because of the check-ins to fetch the next ad. I also don't see that generating many sales because the customer would still need to change their set order, I think few people would accept Amazon outright changing what the button ordered based on the current ad.
Also, I don't need a wall of buttons, a few inside the bathroom cabinet, a few inside the kitchen cabinet, a few at my workbench, in the garage, in my shed, is all I need.
Writing it off might be premature, at least it is worth a try.