I couldn't be talking from a more realistic standpoint. I've lived in places where incumbent ISPs don't invest in infrastructure, places where a private organization built out a cable network without any subsidies, places where a municipal provider was subsidized by federal grant money, and places where there was no public or private build outs and so I built my own ISP servicing my rural neighbors.

I'm not saying that municipal broadband is a net loss, but there are no silver bullets. Subsidies are one way that a municipality can "pick a winner", and in so doing, it can assure all of the competition loses. Sometimes that's a net win, sometimes it isn't, your claims to the contrary notwithstanding.