I have read the reports a couple of times. I don't think it's very clear.
Presumably the argument is that there is a lot of additional cost to the transport companies in moving these 70/80000 crowds from.city centres to out of town locations.
Very peaky only in one direction at either end of game time. Additional operations, not just more people on existing services. And for every additional service full in one direction, it's presumably empty in the other.
FIFA are not paying any of those costs or providing any other means by which these people can move.
The local taxpayers aren't going to pay for it.
The tournament is generating huge revenues.
The headline grabbing fares are presumably protest tactics, in an effort to get FIFA to underwrite it.
If those crowds did pay those fares then wahey. But at normal fares, they're losing money.
I guess.