The problem is that most people don't have any sort of infrastructure at home that could happily manage this sort of thing in a well protected way
Well given the vision behind smartmeters...
Smartmeters already have some form of Home Area Network (HAN) so that they can communicate with the In Home Display (aka Smart Meter Display or Home Energy Monitor) additionally, given the future where your energy provider/smartmeter controller will control your energy usage, it seems likely and sensible that the home IoT hub/server is part of the smartmeter. This also providing a single place someone needs to enter their preferences - having to provide movement details/schedules to a dozen or so IoT maufacturers' dedicated websites is going to be the fasted way to kill IoT
