There have been instances of network-enabled devices updating to put existing features behind a paywall, unilaterally changing the terms of service (can’t use device anymore until you agree to new terms), and simply removing features that you paid for when you bought the device.
Why does a dishwasher need wifi?
It probably requires an app to monitor the wash cycle. All they have to do is start charging a subscription to use the app. If people bought the dishwasher because they would get alerts when their dishes were clean, now they have to pay a recurring fee.
Roku pushed an update to their TVs requiring owners to agree to a new terms of service. There was no “disagree” button, and the TV wouldn’t work until people accepted the changes.
This is such a new problem that it’s never been challenged in court.