In this example, is 'You' the municipal government? Who built this new road? What for? Why did some private enterprise think there was enough income for two parallel toll roads?OK let's use an example.
You run the roads in a town, including one big toll road. Part of those tolls pay your salary. But to a much larger degree, the tolls go to local schools, and you are considered a hero for funding great schools without having the town go into debt.
Then a new road opens parallel to your road. Your toll income goes down. The town starts going into debt.
Why in the world would a government undertake the maintenance of a private toll road?!!What are you going to spend your maintenance budget on? The new road, or the toll road that funds the schools (and pays your salary?)
What does this outlandish scenario have to do with manufacturing? Is the US government manufacturing anything that would be endangered by competition from commercial enterprise? Last I heard, it was even contracting out its own responsibilities, like prisons and snow removal.