There was a similar situation when Google Fiber was rolled out in Provo Utah. Comcast essentially had a monopoly (they're the only ones allowed to put their cables on the power lines), they charge huge amounts for their internet, Google Fiber buries their fiber lines and suddenly Comcast drops prices begging people to stay.

I had to use Comcast for years, they lied to me many times and I finally escaped to a place with a different provider. Suddenly, this year Comcast comes and buries fiber lines in my area.

I will deliberately avoid Comcast, competition is absolutely required to keep prices down.