https://www.cnet.com/news/amazon-stops-selling-dash-buttons-goofy-forerunners-of-connected-home/

But the usefulness and novelty of Dash buttons has waned over the years, and Amazon said Thursday that it had decided to stop selling the gadgets globally. If you still proudly use a Dash button (or a few dozen), don't worry: Amazon plans to continue supporting new orders through existing Dash buttons so long as the public keeps using them.

So what killed the Dash button's future? Well, by Amazon's telling, the device was a victim of its own success, since it helped nudge forward the concept of the connected home to what it is today.