Think about it: billions of IoT devices out there, (Statista says that there are 23B already out there, and they project over 75B by 2025) leveraging tiny bits of your bandwidth, invisibly to you, and you getting paid for it. Every time one of these devices checks the temperature, changes your Nest, captures an Arlo image, or detects how much milk is left in your Samsung smart fridge, you get a cut.
It might not be “Money for Nothing”, but it’s pretty close.