I think we've been here before.
Haven't they just sold Motorola, for a loss?
The problem is: just about how many people will buy these at a premium?
You could argue that Google doesn't need to actually make a profit on these, but it then becomes yet another unsustainable business they close after a few years. Which leads us to the next problem: who in his right mind is going to put up time and materials (money) to produce accessories for a product that may not even be around in two or three years, depending on how long the attention-span of the big G lasts this time.
Then, the Apple Stores are an incredibly steep hurdle to overcome for any competitor. It would take tremendous cap-ex to replicate that model at this point. Online-stores can only go so far with e.g. supporting older people or "having someone have a look" at a device.
Sure, Google online support can do stuff that Apple Care will never be able to do - but most of these cases are very unique and don't really translate well to the needs of Mom and Pop (which form an important demographic for almost all countries where Apple has a bricks-and-mortar store presence).
So, I wouldn't be surprised if this it yet another piece of dirt they're throwing to the ceiling, hoping that it will stick.
Because somewhere, some guy in a Google Lab is already thinking about the next piece of dirt that could be thrown to the ceiling, in the hope that it sticks...