They clearly haven't spent enough on the marketting/PR, as the majority still cannot see any benefit.
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You obviously have not been watching the documentary series The Railway: Keeping it on track on BBC2.
http://www.bbc.co.uk/mediacentre/proginfo/2013/07/the-railway-keeping-britain-on-track.html
It totally supports my argument that the current system cannot cope with the massive increase in passenger numbers and how new line expansion is essential, especially HS2 in full. Enormous amounts of money are already being pumped into the current railway system just to stand still with now a record of 1.5 billion journeys being made by passengers, So much more is going to be necessary by 2050. The system is creaking under the demands made upon it, and the series has highlighted how one incident on the line, such as a suicide, results in up to 90 trains delayed, and hundreds of thousands of passengers suffering because their is no spare capacity.
Let's build HS2 as quickly as possible, plus HS3, HS4,.........etc,etc. We must have a new system not one using so much that dates to the Victorian age. 
Should be 400mph+ Maglev, like Japan are building. It has a massive advantage of not needing constant track maintenance and would spread the London wealth bubble to new parts of the country as you could commute from most parts.
Weather we like it or not super-cities like London are the most successful at wealth creation as you get many like minded people working in close proximity to each other. You can use all the arguments you want over using modern communications instead but in reality it doesn't work like that. Much business is done informally in local bars, cafes, coffee shops and restaurants that just wouldn't happen as people don't know you exist and also because in close communities you get personal recommendations etc.
It is the same with airport hubs, you can talk about having regional airports and hubs instead, but airlines like major hubs as they do more profitable business at them. They are also normally adjacent to super-cities for business travellers as they account for the most profitable revenue streams.