Lights can be controlled by switches, even timed ones.
Heating as you say via a timed thermostat.
Door bell, well just open the door and see who it is... Not at home, not a problem then. We have managed for years without video door bells
Relying on internet to work from home then, Pay for business service & have a back up option not relying on the same lines. So 4G or such.
Of course people want it as cheep as possible. So rely on std service.
Just how would the OP survive if power went down? While you may get compensation. If it's bad enough it can take a while to get up and running.
Wats SUP doc.... You using too much.....