I just don't feel that anything relevant to the IoT is missing from my life. At all.
That's the real problem with the Internet of Things: most of the things we own are not all that useful when we're not in close proximity to them. Thus, not only are users and manufacturers unlikely to update them in the future; users are just as unlikely to connect the thing in the first place.
Home automation through things like light switches, etc. has a use case, but those products have been available and Internet-connected for over a decade and we still haven't seen wide adoption. I recently priced it out -- it would cost me over $5000 to swap out the outlets and switches in my house for Insteon devices. And that's just the hardware; not the electrician required to connect it all or the time I would spend configuring everything. Home builders aren't going to spend that kind of money building this into anything but the most high-end homes -- the IoT hardware alone blows through the fixtures and appliances budget that most home builders allocate.
People want systems that "just work". IoT does not "just work", and none of the current or announced implementations address the big problems around configuration (namely, every house is different so every implementation is custom). And in some cases like a stove or a refrigerator, any amount of configuration is going to be too much.
It worked OK for a while, but the setup was not robust and eventually some controllers would not work some devices at some times. The annoyance factor in going from 0 errors to a 1% error rate is HUGE.
Five years passed, and I have been slowly replacing all these X-10 devices with hard-wired switches or with Insteon. Of course, the original 1959 wiring paths (12 gauge Cu FTW) still work fine.
Now, when I see connected/automated homes in design mags, all that tech seems more like a long-term maintenance headache than a desirable feature. If I had an unlimited budget, I would not build those features in, I would just install conduit and run old-school copper wires through it.
My lessons: (1) The design life for a home is decades, the refresh rate for home automation devices is years; (2) Upgrading/tinkering is fun the first time -- but only the first time; (3) Your spouse hates it more than you do; (4) The existing device does one thing without fail, replacing it with a device that does more things but sometimes fails is not a net gain.
But prices need to come down, light output needs to go up (wireless bulbs seem to top out around 60W equivalent), and switches need to not be a $60 optional accessory (looking at you, Hue Tap). Controlling lighting with your phone is neat, only being able to control lighting with your phone sucks.
Long term, I'm sure I'll end up with more IoT devices. But it'll be because they got shoved down our throats and I didn't want to pay more to avoid new "features," not because I wanted a wireless microwave.
For example, good sleep is really important to me. So I used the Philips Hue bulbs and a NUC to build a smart home lighting system that behaves much more like daylight. When I describe it to people, quite a number really want it. Not bad enough to get my code off GitHub and install it, but they'd pay something extra for it. And I now see pre-packaged commercial products getting proposed, so I'm sure they'll have options.
The interesting thing happens when that cycle drives the costs a fair bit lower. Look at phones, for example. Smartphones were a weird, exotic thing. Then they were a high-end consumer thing. Now they're the default. A couple years back I went into a store looking for a cheap phone and asked for one without a web browser. The clerk looked puzzled and said, "Well, they all come with web access." I'm sure I could have ordered a dumbphone somehow, but it would have been harder and cost more.
So my question is: how much extra will you pay for your house not to be connected? Because that's the real test for me about where the IoT thing will end up.
The situation with your daylight system is a perfect example. People think "Oh, that's cool" but won't actually get off their ass and spend a few hours setting it up and configuring it to their liking. Unless it comes out of the box, it's a non-starter.
IoT devices as they are today require a systems integrator to come in and tie everything together and configure them. So your lighting system is integrated with a presence system that is also integrated with your thermostat. Each of these has to be configured on a case-by-case basis, because no two homes are alike. But if your products require an integrator, suddenly the integrator is your customer, and you begin sacrificing end-user focus for things that make the integrator's job easier.
And then you realize that the largest consumer of IoT platforms isn't consumers themselves, it's installers like ADT. Their focus is on selling simple products that require minimal support, not feature-rich ones. Why? Because users simply aren't interested in paying any amount of money for advanced features. Until that changes, IoT is going to be a niche hobbyist market. Even if it's built in to every device you buy, if it's not worth anything to you, you're not going to configure it in the first place.
But if you look at devices with cycles in between, I already see it happening. 10 years ago when I bought a stereo receiver, I bought something entirely dumb. Last year I replaced it and ended up with something that was internet connected. Not because I really cared, but because the equivalent model came with that. And in retrospect I'm glad; their phone/tablet app is a way better remote control than punching a bunch of mysterious, no-feedback buttons. The same thing happened with my DVD player; when the old one died I just bought whatever Consumer Reports recommended and it too is internet connected.
I think that you're right that the development of pluggable Android is what will push this forward. And Google clearly agrees; their project Brillo is surely one effort among many.
Neat. Did you try to coordinate room lighting color changes with computer screen colors controlled by fl.ux?
https://github.com/wpietri/sunrise
It's minimally sufficient for my needs, but I'd be glad to work with others to expand it.