But you can't omit the hidden cost in your cell phone bill every month that is present regardless of whether you buy your phone from the carrier (subsidized) or from Google (unsubsidized), which will automatically make the phones sold by Google much more expensive.

The only real solution to this problem is for Google to become an MVNO and start selling cheaper cellular service (cheap enough to get people to switch en masse and bring about some real change in the market).