Thanks for the reply. I installed the first mod I found: http://www.train-fever.net/filebase/index.php/Entry/1240-Cost-Price-Balancer/
it makes 1850 trains possible yay! I have not been using train fever net because it was mostly german, but seems like they try to write some things in english too now days.
Btw? would you want to share the tactics / screenshots you use to be able to use trains in early game with profit in vanilla hard mode? I tested many things and thought it was impossible.