> Many subway systems are profitable The vast majority are not, the systems in a bunch of Asian cities (mostly in Japan, HK, Taiwan, Singapore) are the excepti

> Many subway systems are profitable The vast majority are not, the systems in a bunch of Asian cities (mostly in Japan, HK, Taiwan, Singapore) are the exception due to a few reasons, most notably because they use distance-based fares and land around stations often belongs to the operator bringing in massive commercial revenues. https://en.wikipedia.org/wiki/Farebox_recovery_ratio https://en.wikipedia.org/wiki/Farebox_recovery_ratio