Does anybody actually think air alternatives have got any better in the last 20 years or so?
Personally I don't think they have. The railways have seen significant investment, but for the most part this has been spent on maintaining the track and improving the railway station infrastructure, not so much on improving journey times or rolling stock. The cost of rail travel has continued to rise significantly above the rate of inflation making it more and more expensive and unaffordable for many people.
Motorways have improved in the last two decades but the number of cars on the roads have also increased dramatically so in most cases the drive times will be significantly lower than what they were 20 years ago.