Traditional telco operators that dont migrate to an IP service will just see their market share fade away and die.
With the introduction of messaging services like Skype, WhatsApp Facetime etc etc which are effectively free (once you have a connection to the internet) then the days of having a PSTN line just for analogue voice are numbered.
I suspect the next 'revolution' will be a totally wireless service to your house which is good enough for large downloads (4G) The days of copper wire linking your house to the outside world are imho numbered.