I think it tells you a lot about the underlying economics that an organization that's so successful at making money on wireless can't even eke out a 5% operating margin on wireline.
Verizon has invested about $23 billion on its network, and has 6.6 million FiOS subscribers. That's about $3,500 per subscriber. Chattanooga spent $330 million on its network, to serve 65,000 subscribers, or over $5,000 per subscriber.
To ball-park Google's KC rollout. Estimates are $85 million to wire the neighborhoods, plus $500-600 per house. They've got about 32,000 subscribers,[1] so about $3,250 per subscriber.
[1] Based on the reported 27,000 video customers and using Verizon's 85% ratio of video to broadband customers.