Better support though.
The AWS IoT Enterprise Button is for the AWS IoT 1-Click service ("Trigger AWS Lambda functions from simple devices"): https://aws.amazon.com/iot-1-click/
Notice how the Enterprise button listing (https://www.amazon.com/dp/B075FPHHGG) says "This is not the AWS IoT Developer Button" with a link to the other button.
The new ones are strictly worse, only able to be bound to a Lambda
HW people on HN, is this impossible at scale?
Was the original/intended purpose to always sell them at cost and make the profits up through increased sales?
I think in Amazon's case it was just experimentation with a sunk cost. Based on the discussion above it looks like it's impossible to form a company to sell these to turn a profit, at least in the dash button form.
negative profit when you count assembly.