If you buy an IOT fridge and the IOT is important then you would have to check up front how long it will be supported for. As most white goods seem to be designed for a 5 year lifespan then that may be all they guarantee software support for.
If the IOT requires access to a service provided via the Internet then the manufacturer could go bust at any point and the IOT could then cease to function - this is a significant risk for anything that requires Internet provided services. Likelihood is the fridge itself would continue to operate for the core function but may lose the IOT features.
Edited by ian72 (Fri 13-Apr-18 13:07:29)