If there is some thing in my house that could use excessive resources without me knowing then having a device which could alert me and auto switch off the resource is an advantage.
So a dehumidifier which has gone faulty, a water leak, a central heating boiler not switching off, if I go away from the house and my cheap wireless thermostat loses contact with base station and the house is at 27°C it would be nice to get an auto text message and for it to auto switch to defrost mode, we can get "If this than that" devices that will do this, they are what I call "Smart" however as well as switching off remotely one would also need to be able to switch on remotely.
But having a water meter which if you use over "X" gallons per hour auto turns off, and sends a signal with also switches off anything which could be damaged without that water supply would be great. Also where meters are located in an inaccessible area so remote reading device would be great.
But the idea of being able to switch off remotely, but requiring manual intervention to switch back on is rather worrying, one realises mistakes will be made from time to time, a knock on the door and some one saying I am here to turn your power off means you have the chance of pointing out errors and it is not your house which should have the power turned off. If they turn off the power and you phone up and they say sorry it should not have been your house turned off, we will get some one around latter today to switch it back on is not what we want.
It will happen, and some day it will mean a death as a result, my mother's alzheimers is at the point where she has problems using a telephone, the call station is alerted if there is a electric power cut, but not gas or water, and she would not answer the door to a stranger to turn things back on, now we live with her, but a year ago some one turning off the gas would likely mean the house got very cold before some one realised something was wrong, I walked into the house with central heating both stuck on and stuck off when we had a faulty thermostat, lucky the camera had a temperature readout so I realised there was a fault, but not call from carers and I found my mother sitting in a house at 15°C and cooling.
It really does not matter why, be it unpaid bill or house being sold, it needs a physical visit before you can turn off supply. Be it animals or human domestic premises should never be disconnected without ensuring the occupants are safe. I do have one non cordless phone, but my father-in-law does not, so power failure he can't even phone for help.