IoT is a fad.
There, I said it.
Embedded has a use. It always had, ever since microlelectronics. And it most certainly always will.
But IoT is a fad. Pure and simple. It roughly is to the general population today what Ruby on Rails was to programmers 10 years ago. Truckloads of hype that will soon wither and fall back to niche cases when facing the real world.