To the proliferation of something as magical as the Internet, as well as something that is constantly changing as technology, then towards communications networks, major transformations would be undergone. This is the reason why much thanks is extended in part, to such. Currently appearing to be emerging, is the new model which is one that can switch control from a carrier to a developer, then ultimately to an end-user.
The Net has surely been a top driver that has done nothing, but propel the trend for its part, at least.
Link: VoIP Developer Feature: Catching the Telecom Transforma