This is also acceptable to me, especially if it’s X per month for service and device (including device replacement if needed). I also like how it reduces capex for a business that is looking to connect their devices and just needs a plug-and-play system.

How does that help someone who has built your product into their working procedures? When you decide to stop doing it they are in an even worse situation than the Jamboard users because presumably you will repossess the hardware.