Deploying a fibre optic network can be an expensive business. Installing a new backbone network is a part of this, but delivering fibre from the kerbside to individual buildings is a substantial proportion of the cost. While each connection may not be very long (up to 200 metres) it is often the most complex part of an install as it needs to bend round obstacles between the manhole or cabinet and the premises themselves.
Add in the disruption to the neighbourhood of digging trenches and the need to gain entry to a building to install customer equipment and the difficulty increases even more. Now multiply this by the thousands of buildings that large carriers are looking to connect and you can see how costs increase dramatically. In many cases the last 200 metres are the most expensive of all network deployments.