| | On his blog Mr. Stolyarov has now published Part 2 and Part 3 in response to my comments here.
Part 2 is brief. He acknowledges my points about Roman roads versus modern roads made in post 34. He concludes with:
And yet, despite the massive technological superiority and continuing advances of our time, road quality in places like Chicago continues to be dismal. I wonder why, and I see no answer besides government intervention and favoritism. Well, I do. Still granting that government may be part of it, other causes for poor road quality are volume of traffic, weather conditions and salt. I gave the first in post 34 and the others in post 36. I elaborated on them in post 75 and post 85.
Part 3 is long with a lot of algebra, and a response to post 34, wherein I used costs to compare a more expensive, more durable road to a cheaper, less durable one. He argues that a higher quality road will generate more revenues and lower maintenance cost. That's fine. He also writes:
Mr. Jetton claims, quite plausibly, that, if CL + PV(ML) < CH + PV(MH), then the private owner would still opt to build the lower-quality road RL. While this is certainly a part of the considerations a private road owner would have to face (along with any fiscally prudent government planner, of whom there are some, I grant), costs are not the only consideration for a private owner. Maximizing future revenues and minimizing foregone revenues is a still further consideration. With regard to roads, it is a fact that road maintenance greatly decreases the traffic flow that the road can accommodate.
To first make a small point, I didn't say the private owner "would opt", but "may opt" for the lower-quality road.
Mr. Stolyarov is quite correct that the revenue side of the alternatives is important. My comparison in post 34 used only costs to a great extent to keep it simple. Putting revenues in a comparison makes it more complete, but more complicated. But I'm quite willing to do so, and it easily accommodates different time frames, e.g. 40 years for a more expensive, more durable road and 25 years for a cheaper, less durable one. (I used 40 years versus two sequential 20-year periods in post 34 to make equal time frames.)
Mr. Stolyarov closes Part 3 with:
Thus, all other things equal, the private entrepreneur will be likely to choose to build a higher-quality road in a greater range of circumstances than the government official, which means that a greater proportion of roads will be of a high-quality, low-maintenance nature under a free market for roads than under a government-controlled market. Maybe. There is one questionable, implicit assumption in all his algebra. It is neutral to the size of the different up-front costs. (Yes, higher revenues and lower maintenance costs for the higher quality road partly offset that.) However, there remains the "budget issue", namely the size of the initial outlay. Whether it is government or a private firm building the road, this is an important real world consideration. Let's assume the government or private firm has enough capital for the lower quality road, but not for the higher quality road. That does not necessarily preclude the higher quality road, assuming the government or private firm can borrow the difference. A comparison model could easily accommodate that. The money to repay the loan and interest thereon could be additional costs for the higher quality road. This identifies the questionable, implicit assumption in Mr. Stolyarov's algebra. It assumes no borrowing costs for the higher quality road and is indifferent to the different initial outlays to pay for construction. Borrowing costs might more than offset the additional expected revenues from the higher quality road.
Taking all this into account, it still might be the case that the higher quality road is the better alternative. However, the choice is somewhat more complicated. (Edited by Merlin Jetton on 10/02, 10:18am)
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