I believe the FCC not enforcing its own policies addresses how NN is/will not working with the phone system. A law is only as good as who polices it.
One example: AT&T and Verizon and others were implicated in aiding the NSA wire tap in 2006 illegally but the FCC ignored it.
http://markey.house.gov/index.php?option=content&task=view&id=1610&Itemid=125
If the FCC can't be trusted protecting their own phone system policies, getting them to police NN and not be swayed by politics and special interests is a dream. A great idea being handed over to a bad heavily lobbied and corrupt organization isn't going to help.
Besides the FCC simply being a bad cop to rely on - innovation will suffer. Land line phone companies have invested very little in innovation and their networks. Reduced demand and income (from people that WOULD pay more for tailored access) and loss of people that think they pay too much for minimum access and just canceled the service - means less money for re-investment in the network. Our phone system has little flexibility to adapt itself price-wise.
Imagine if ISPs were required to support only one dial-up speed initially; Or had no flexibility to price points of entry and no ability to have ISPs tailor non-neutral (paid) content to offset their costs to lower entry-level prices. (AOL, Compuserve, etc.)
One could attribute the radical Internet growth a decade ago to the lack of NN, not the need for it.