The truth about a lot of these services is they only work at the scale Google (or Amazon, or Facebook, etc.) run them. You'd spend thousands, if not millions, of dollars to get equivalent functionality, even if you got the software for free. I've basically had this argument every time someone helpfully suggests "Dropcam/Nestcam cameras should have an option to save data locally." You can have cheap, 100% private and efficient. Choose two.
In other words: "It's Google, why are they outraged that we're encroaching further on their privacy? What did they expect?"
At least you guys are honest about being evil, now.
How is that "being evil"? Isn't that the product's whole raison d'être? Everything else ("it's going to be recording everything you say and reporting it to the NSA!") is just tinfoil-hat-level speculation and not based on any factual information. If I started saying "In-n-Out could change their burger recipe to include cyanide at any minute and kill all their customers" would you accuse In-n-Out of plotting to kill everyone?
For the record, this is my very own (pretty frustrated) point of view, and obviously doesn't represent Alphabet's view in any capacity.
E.g. cheald's comment above is pretty clear "I always wanted that, but I fear its implementation"