>you should be required to prominently mark the devices as "dependent on the manufacturer's servers")
Actually it's "we spy on you and reserve the right to brick your device at any time", which pretty much every EULA already covers ...
That language needs to be in bold print on the consumer package not hidden in a shrinkwrap license inside the box or worse, online somewhere.
Treat it like we do with food allergen labels. A standard location and plain language.