And water is different again. If I want to change my electricity supplier, privatisation means I can get my supply from a variety of companies. I live in Suffolk but if I want Scottish Power, it is no problem.
If I want to change my water supplier, I can't. Where I am I have the choice of Essex & Suffolk water or no water at all. Drainage is done via Anglian Water and if I want to change, again, I can't. If I lived a couple of miles down the road in Norfolk, my water and drainage would be via Anglian.
No competition, just a monopoly, And the advantages of privatising were....?