Not the question asked, but relevant: When each individual enterprise considers its own transport needs, road transport is usually cheaper. However, when looking at the collective needs of an entire economy, rail is usually a way more efficient and cost-effective option.

Private rail companies will only invest where there are epic amounts of cargo or passengers to move, which when left to the private sector leads to massive under investment and over-reliance on road transport. There is no coherent argument against having extensive government investment in rail.