But you do need the Nest service for the "home automation" part, such as changing the temperature. (i.e. They're worried that if Nest gets shut down by Google,

But you do need the Nest service for the "home automation" part, such as changing the temperature. (i.e. They're worried that if Nest gets shut down by Google, then it will stop working since the API isn't self-hosted by the thermostat itself.)