@revk Passing IoT devices over to new owners is currently an open issue. (Open research issue? Very likely.)
Even "inheriting" something as simple as an analogue phone line is difficult, and that has no local state. Handing over a broadband connection is also difficult - I've done the "transfer of billing" procedure with Zen a number of times, for example, and I still have some measure of administrative control over connections that haven't belonged to me for years.