These shenanigans by Google and the numerous reports of the problems with Nest and their smoke detectors have basically guaranteed I don't include Google devices in my home automation setup. I would rather manually muck around with a raspberry pi and some random sensors bought online than rely on a Google product at this point.

There's a lot of room for a vendor to come in with open products, a pledge to maintain that open-ness, and decent integration to really take over the home automation market. I really feel like all the existing products are too proprietary to be of any interest to us home automation geeks.