I do not understand why you are not revolutionising services. Few telecommunications provide superior network except the Megacities.

Why not use Ip Phone System Numbering and dedicated network to implement via a third party service? If that is found you can replace any number with IP PBX without notifying or letting know the provider. As far as mega cities are concerned what are legalities of Cable and V-Sat Communications?
Even a threat of revolution from VoIP to IP Calling will bring the suppliers to apply mind and support your cause.