I'm not so convinced IoT will fizzle with average people. Security and cloud-dependence aside, I can see the value in
certain things being connected and remote-manageable: baby monitors, lights, pet feeders, washing machines, coffeemakers, ovens, thermostats; anything where controlling or seeing data from it from a outside the room or outside the house would be genuinely useful to solve
particular needs. Some others will be complete gimmicks solving no real need.
And all of this doesn't account for any evolution of appliances along non-IoT spectrums or the introduction of entirely new ones:
- a combined washer/dryer blackbox where dirty clothes go in and clean, dry clothes come out
- an affordable at-home deboning/meatcarving apparatus
- an at-home vegetable-growing planter
- a 'smart' pan that controls the cooking temperature and done-ness
Some of these concepts are being trialed right now, or exist at industrial scales and have yet to be scaled down. A lot of what's being talked about assumes that were it not for them being 'smart', appliances will look exactly the same in 10-20 years. I don't believe this to be true. Nothing too futuristic, but new gizmos will exist, solving real (if niche) needs, some of which benefit more from data sharing than others.