Public roads also operate under massive loss. As long as society is willing to pay for it, I don't see a problem.

There you go, some societies are willing to pay for it, and some are not depending on whether it makes sense.

If you are trying to say that some societies are wrong about it, that's a bit more of a tough sell.

That's not accurate. Multiple shinkansen lines were pofitable before covid, making up huge losses in rural lines.

The infrastructur was largely financed by the state, but that's true for any transport infrastructure.

Is it as accurate as their claim about ease of buying new planes?