the social benefits, which the Indian people gained owing to the introduction to the railways, were this outweighted by the country 's huge ecoonomic loss?

i don't get how there was economic loss through this.

railways need huge investment and a huge amount for its maintenance

the marine ways was also introduced which needed huge investment but it didnt worked well as the railways were doing and too railways also needed a huge investment. so, all this leaded to the country's huge economic loss.