Ich bezweifle, dass das logisch begründbar wäre. Die Ursachen müsste man genau untersuchen.
Although the New York City subways were never privately owned, private transportation companies operated in the first thirty-six years of the subways under a city franchise contract. The best of the private transportation companies, the Interborough Rapid Transit Company (IRT), generated strong profits (...) Even into the 1920s, when price controls and rising costs as a result of the inflation of World War I were starting to squeeze profits, when private operators unsuccessfully sued to raise fares, the subways still were in the black. But the “Good Government” goo goos, progressive leaders often hostile to private enterprise because it was often profitable, opposed it, arguing for a public system. (...) The IRT inevitably started to lose money in the 1930s owing to the fare freeze. Service declined. (...) The government took over from the last private management company in 1940 and started to destroy its
accomplishments. “So superbly engineered and maintained had the system previously been that it took years for the systematic neglect to take its toll,” Caro wrote (in: Tunneling to the Future: The Story of the Great Subway Expansion That Saved New York, Peter Derrick).
https://mises.org/wire/new-york-city-subways-woes-socialist-enterprises