Could Google Become The Next Wireless Giant?

Google-Fi

Range of and capacity have been major limitations for existing cell tower solutions. I am not an engineer but it would seem that if a cell down can only reach customers over a few square miles than the technology is probably old. I have heard Wifi and Wimax tests have proven to work up to 100 miles. I also know how to make a phone call using VOIP. So if you add 1+1 together you get a Wifi / VOIP mobile phone. Is it going to take an innovator like Google to enter the wireless carrier business before existing carriers will wake-up and invest in the future? Google does know how to provide a good service to its customers and monetize that experience through advertising profitably. Why can't the same be done with free mobile phones?