In a world structured like that, it sounds like there would be good business opportunity in developing software and services that run on a general computing device.
We, the geeks, may value open-platforms, but observe that it’s Google, Apple, Samsung and Amazon that effectively control consumer home-automation and smart appliances - and they sure as heck aren’t interested in making their platforms open and interoperable. (I’m speaking as a Nest customer who got screwed-over by Google closing Nest’s open API - that was a blatant anti-competitive move).