I don't like either of your solutions, but in some parts of the country, particularly outside the south east there are different solutions that could work on different routes.
I am very old fashioned in believing that the railways enable better employment mobility and help keep more people in work. if more people are in work paying taxes, then there is wider economic benefit that may justify some subsidy.
Then you believe wrongly. Railways - or any for of transport whether car, canal, air or horse - do not
of themselves keep people in work. The demand for the goods or services being produced is the
only driver for the volume of employment. Improved transport links reduce what are called 'transaction costs', that is the costs of getting the raw materials to the factory and the manufactured goods moved to the customer, the costs of the suppliers meeting the customers, simpler and more suitable communications. Good transport indirectly helps manufacturing and service industries by reducing their transaction costs - but the industry has to be there in the first place.
What good transport links do for people working in the factories and offices is to reduce journey times to work, possibly reduce transport costs and expand the pool of labour that the employer can call upon. Transport links do not make the jobs appear in the first place.
The wider economic benefit should justify some investment and there are lots of overcrowded 3 and 4 coach trains in the midlands and the north which have lots of scope to be lengthened to bring in more income for the railways. The problem is the payback period as the cost of the additional coaches and some platform lengthening could take years to generate the additional income from new passengers alone.
I can't realistically see fares being reduced, with the possible exception of when HS2 opens which might see some lower fares to encourage people to use the new capacity.
It is not possible to justify investment in the railways on the wider economic benefit as that number is purely guesswork and is anyway not really affected by the railway's service offer. It might be possible to justify spending money on the railways if it can be shown to either (a) reduce costs of operation or (b) increase fare income. Preferably both at once!