They're currently facing a lot of lobbying from the existing broadband monopolies because they're building direct competition to them, this is an unnecessary fight. Particularly when their ultimate goal is just to get fast high quality internet.
Build it as an OAN instead and let CenturyLink, Comcast, Charter, etc, lease it. But also let new smaller players lease it too. Instead of fighting the big guys, get them onboard with this plan.
The big guys won't LOVE it because they still lose their monopolistic stranglehold, but at least you aren't using public revenue to push them out of the market. You're using public revenue to create a road that any business can use for an equal fee.
In any regard your local citizens get: Faster internet, more choice of ISPs, and perhaps lower prices due to more competition. Let citizens be the "king maker" by choosing their own ISP.