Earlier quoted context omitted.
Why are you ignoring what I just said? You can go buy land anywhere you want (i.e. where there are no public roads) and your private roads can compete just fine. Anyone has always been free to do this since this nation was created. What's the problem?
Alright, lets imagine what you say. I build a private interstate next to a public interstate. Lets say it costs me $0.20 / mi per honda civic that travels on it, and the public road costs $0.30 / mi per honda civic that travels on it in amortized costs. At the point of use, the user sees my toll of say, $.25 / mi with some profit, and at point of use the user sees $0.00 for the public highway. Who on earth would both…
It's not the public's job to provide customers for your toll road.
You can build your toll road and have unencumbered competition elsewhere.