Why AT&T says it can deny Google Fiber access to its poles in Austin
arstechnica.com
arstechnica.com
In their own words 'We don't want to become an ISP', 'we're simply doing it to shame current ISP's into acting'[0]
As AT&T are building their own networks, even if google do not get access to the poles, it means that they won.
Eventually, there would be a way around the pole problem (like in the UK where most ISP/Phone lines are buried), but for now, they're winning.
[0] - http://www.wired.com/wiredenterprise/2013/01/google-fiber-sh...