I used to operate stores in several malls (not anchors). Rent was ALWAYS based on a base rent AND a percentage of sales,that had to be reported to the mall management, and they had the right to audit my reported sales numbers. This is very common practice.
This might serve as an example of why so much manufacturing is sourced from overseas counties. I wonder how much harder an non-US company would have worked to meet expectations and obligations. Issues of honor, shame, and responsibility.
I've thought the same thing. Nest Home Surveillance and a Nest Smart Doorbell (answer your door remotely, with video), along with Nest smart power/lighting controllers would be great next steps for Nest. I currently use Axis WiFi home surveillance cameras, and store the video using Vitamin D to my QNAP NAS.