I'll throw a spanner in the works & mention summat my semi-tame rail buff insists is true.
Our railways have NEVER been financially viable in their own right. Not even in the hey days of frenzied building & Victorian travel. They have ALWAYS relied upon subsidies in one form or another.
Not everything has to be profitable* in its own right.
As long as it facilitates something (or somethings) else that offers an overall nett surplus, it has served its purpose.
Trouble though is, especially with the inept-but-rapacious Bombay shoitehawks that we're saddled with, those desperately clinging to the helm of HMS UK (heading towards submarine status), is that monetary profit is everything.
If it makes money and they can rinse it for their mates; brilliant.
If it doesn't make money, they can argue that it should be privatised: they can then rinse it for their mates, AND use it as a stick to beat Labour with.
A double win.
*profitable doesn't have to be in monetary terms; it can be of benefit to society, international standing, humanitarian purposes, etc.