I still don’t see how these contextual intervention methods will be any more accessible than the current crop of monitor devices. Most will add some cost and so there is an adoption barrier right from the start. Currently, it doesn’t seem like consumers, landlords, or developers want to pay more for anything unless someone else will subsidize their cost.

Whoever has the most to gain is usually the one who is willing to shell out the extra cash for this type of thing. The landlord example you gave is a great way to see this value relationship in action (save $ by installing a Faucet Buddy). However, that is just a starting point and I would guess that much of the upcoming activity in this area will be around unraveling these complex economic systems.