My personal anecdote: When I lived in a small town with fios and Time Warner and Comcast, every offer was far cheaper and better than when I moved to a much bigger city with only Time Warner.

Here's an article from somebody that claims Time Warner hacked their bill down when Google Fiber opened in their city.

http://consumerist.com/2013/01/30/time-warner-boosts-my-spee...

I don't know if it applies as I'm in one of the few markets Comcast trialed 150Meg service. But they basically bumped everyone here up to the next highest tier. So if you were paying for 100 you get 150, 50 you get 100, 30 you get 50, whatever else was lower up a bit.

It was nice, but to be honest this should be happening more often not just once every... ever really.

Completely anecdotal, but Comcast just bumped me up about 30% from 15 mbps. The customer service still stinks, and the service itself is still very spotty and unreliable.