If you are a business owner who bought one of these and happy with the device would you be “all good” with a refund?
There are costs associated with fielding new tech. At the minimum now people have to evaluate and install some new tech/service. Possibly you are now scrambling around to get a new guard service which can keep your property secure, perhaps at an elevated rate. At the worst your property is going to be burglarised because of the lack of security coverage.
This sucks. It damages Amazon’s reputation a tiny little bit. Every time anyone evaluates some tech or service they think about “will this thing go away one day and leave me in the lurch”? Doing this just increased the estimated probability of Amazon flaking out on you just a tiny bit. That means the next time they are selling something their own brand they will have just a tiny bit harder time to convince companies to be the early adopters. This kind of damage is cumulative in a non-linear way. And reputation is one of those things which are very hard to restore once you have ruined it.
There is nothing “all good” about it. At best this is an “on balance of costs and benefits this course of action was less damaging for Amazon than the alternatives”.