I think you're painting it more complex than it really is. I developed just such a solution for a manufacturer. The manufacturer paid for it and charges the end

I think you're painting it more complex than it really is. I developed just such a solution for a manufacturer. The manufacturer paid for it and charges the end users for the service and the end user pays for maintenance of the sensors and transmitters. We used a cellular technology (not wifi) from the moving things and its worldwide. And it runs on a utility cloud service similar to Amazon. It's not that hard, really.