I will give that number a ring. However, I would counter by saying that a company would only go to the expense once they had all the arrangements to go live as soon as possible to ensure revenue comes in ASAP. From what I have heard, my case is not exceptional.
From an economic standpoint, it does not make any sense at all
A small company, probably yes. However your Utopian view isn't reflective of the real world as far as many large companies are concerned. They tend to be chaotic with lots of over worked individuals, many without the right skills, all trying to work through bureaucracy and not working to a common end goal.
When it comes to infrastructure it's not just a case of dig a hole in the ground, stick some cables in and then chuck some tarmac over. There are lots of stakeholders all with different views and one thing in the chain breaks and suddenly the project comes to a halt. As no-one will really care, if a couple of streets aren't working, it isn't given a high priority and the relevant workers are probably stretched figuring how to fix the thousand and one issues they have coming in.