ie, I think it is actually too early in the IoT life cycle to really visualise the impact it will have.
Let me explain - currently our lighting and applicances are designed entirely around the idea that they will be manually operated and standalone pieces of equipment.
Once that assumption is taken away, and houses are built with a different assumption, suddenly magic begins to happen - imagine that instead of a few lights in the lounge, there was a ceiling and walls covered in thousands of LED lights that could be independently controlled via the internet. The average home could literally have lighting shows. An entire wall could be utilised as alternately a television or a photo viewer, even a wall in every room.
etc, etc. Use your imagination here. The point is that the impact of an IoT on the average middle class house as they are built today is currently pretty small because neither the house nor the contents of the house were designed with an IoT in mind. Once we actually have an IoT houses will be build from the ground up with different assumptions .
At least, that is my opinion.
tl;dr: The IoT has a chicken and egg problem.