As some who commutes every week on South Western Railways the OP clearly doesn't know what they are talking about.
The trains are packed, smelly, dirty and frequently delayed or cancelled. Train strikes have been a common occurrence over the past few years, as are bus replacement services. Privatisation of the railways has been a massive failure and the sooner people recognise that the better.
I feel like I'm being robbed twice, once by paying private companies or investors to travel on the dirty, smelly, over packed train where I don't get a seat and again as a taxpayer, while we subsidise these train companies with our money! I for one am pleased this has happened. Roll on public ownership of the rest of the network along with the rolling stock please!