Public transit should never be treated as an investment that should produce a return. It’s an service provided for people to use. It should be cheap or free. I’ll never understand why people get confused about this stuff, it’s like the dip shits here in the US that’ll complain that the USPS doesn’t make money. It’s not supposed to
It’s probably about control I would guess. The capitalists need people to do work for them so if the population doesn’t know much about their own bodies I would guess it’s more likely they’ll have children who will grow up to be workers.