Some communities aren't profitable to serve with broadband. The first municipal broadband efforts I was aware of were created because no commercial ISPs wanted to compete in an area.

Broadband, like water and electricity, is a natural monopoly - there's only so much room on the poles, and there's significant economies of scale by having everyone in a neighborhood connected to the same infrastructure.

I hope that Municipal broadband becomes more available and more common. On average, the service provided by the municipalities is much better, and much cheaper than the commercial alternatives.