@thor Vendor lockout is common among other problems. If the companies would supply samples of the devices they are considering and what it would be used with, you could save them a lot of money and trouble.

The most likely problem would be the firmware and how it would make them have to continue to use that brand or have to replace all of it. The firmware on IoT devices is abhorrent and from my experience with some IoT devices, I could gain access without much effort.