I think there's a lot of unrealized potential with smart homes. In particular, there's great potential environmental and cost savings benefits.

In addition to the obvious things like turning off the lights when you leave, there are less obvious things like balancing your peak load so you don't need as much infrastructure

It's been possible to do more home automation for roughly 3 decades and it's been theoretically trivial for a decade or so. So why are we stuck in the mid 20th century?