Hong Kong makes 2 billion a year on public transportation. They did that by giving the land around the station to the transportation agency, so they lease it out long term, and that pays for all the trains and operations. They charge a token fee for using public transportation. I'd prefer to see real public support, rather than a business/profit justification for lower fares, but in the current greed-valued world I'l…
Perhaps it results in more public support for some reason, I'm unfamiliar with the politics of Hong Kong.