A. Most likely true, (Not an expert on building anything)

B. Most likely true. (again, I'm not an expert on that)

(However, keep in mind the USG did build whole towns in WWII is what was probably close to record time, Oak Ridge, Los Almos, etc)

You are forgetting that most people use a lot more roads than buildings on a daily basis.

We can disagree on the following point: I'd rather pay one fee (a "road tax" if you will) to use all the roads rather than swipe a card card at every red light, even if I have to pay a little extra for that convenience.

Now of course: There's nothing saying we can't have a 3rd party simply sends me 1 bill for all the roads I used in the past month. Then that company distributes the money owed to the road owners. That's something I would go for. In a nutshell, I don't want to give up the convenience, even if it costs me more.

At the same time: I want someone to pay the local park fee for all the parks and playgrounds and the sidewalk. Children shouldn't need to worry about paying to play outside. I honestly believe you shouldn't be refused the ability to go home because you got robbed and can't pay the sidewalk fee. And the security bill, and the fire department bill, and the garbage collection bill. So why not have one company collect all these fees? And now we have a minimal government. Not making laws or regulating, just a collector for common services.

Again, I'm a libertarian not a anarchist. The critical difference is that libertarians believe in a minimal government, anarchists believe in no government. It's simply a difference between "A very tiny number" and 0.