Leading by example -- and collecting a lot of additional data and metadata along the way; also see The most remarkable feature of Google’s new cell service (The Washington Post)
"Google’s real secret is in the handoff from Wi-Fi to cellular or vice versa. When I made a call on my home Wi-Fi, then kept talking as I walked out into the streets of San Francisco, the transition was seamless. But Google also allows for a seamless handoff between the T-Mobile and Sprint networks without you noticing. That’s magic.Project Fi Review: Google Masters Wi-Fi Calling, but Needs Better Phones - WSJ
While anyone with a Gmail account can request an invite, it’s important to realize that Project Fi is, at this stage, an experiment. When announcing the mobile phone service, Google senior vice president of products Sundar Pichai said the company doesn’t intend to upend major carriers. The point of Project Fi is to show what is technically possible and to push major carriers to adopt Google’s ideas."