<i>&quot;with exceptions for intentional servers, which should almost never happen on a client system&quot;</i><p>But these light bulbs _are_ servers. With IoT, everything becomes a server. Your home system will have to be able to query your couch and your smart watch whether someone still is there and awake, and control the tv, the lights, the curtains, your fridge&#x2F;microwave&#x2F;phone (to call emergency services, if needed) accordingly.