Aha, the Oldham Labour Club has arrived
I don't know what your blinkers are for, but costs and efficiencies at all of the formerly state-controlled utilities and services you mentioned are rather healthier than they were in the 1970s.
Hands up who wants to be told they have to wait three months to get a phone line installed and then be asked to choose from a range of about three 'approved' handsets'?
Or travel by coach at a time of day when the National company tells you you can, and charges you a king's ransom for the privilege?
Thought not.
As for gas and electricity - well I shudder to think how much more we would be paying now, with global energy prices as high as they now are, yet without any competition to restrain prices in the domestic market.