It's already happening in the U.K. (albeit in only a small way)! The government need to be much, much, much more pro-active.

We knew this was going to happen when Dr. Beeching closed half the system down in the mid sixties, aided and abetted by the then Minister of Transport, Ernest Marples whose company, I believe, (Marples-Ridgeway Construction), were building motorways all over the place. What a co-incidence! I wonder, could such apparent corruption happen again today? Hopefully the populace are more environmentally aware?