Is it common for an ISP to install a lased line (circuit) and when the service ends, the service is not unbundled again but all the cabling is left where it is? I have even seen that a circuit is still active on there exchanges after years and no one at the ISP seems to care that they are wasting there own resources.
At various jobs, I too have seen boxes of CPE gear waiting for the phone call out of the blue demanding it back, and circuits that are still live despite being disconnected ages ago (and not being paid for). On the home front, I canceled my digital cable years ago, but they never asked for the converter boxes back, nor did they physically disconnect the cable (I have satellite nowdays). I have never seen them remove cables, etc. it's just too expensive to bother with. The exception to this is Verizon when they do a FiOS install .. except they actually remove the *competitor's* cables, if the customer asks them to (which is preceded by the question "hey .. while I'm up there, I can take down that ugly wire if you ask me to.."). Cheers, ~Mike.