Comment by zamadatix

I can fathom these have caught more failures than they've caused for these supermarkets, not counting the other ways they use smart devices. If there's a sad part to be found it's in single points of failure but even that may not be far off cost optimal in the long run.

But the way you find out which kind of scenario is by getting the loss and savings data and comparing it, not wondering what could be true and declaring it be the saddest one.