Grain Freight Rates.

[FarmRanger]

Allowing a monopoly to charge whatever they like will result in higher costs and poorer service (if that's possible).
The antidote to the railroad's monopoly powers to date has been regulation. If you're going to remove that, you'd better do something else to level the playing field or suffer the consequences.

How about open running rights?

[Hopalong]

Have heard reason railways agreed to maximum revenue entitlement was prospect of open running rights.
Do not hear a lot of dissatisfaction from other commodity shippers, at least to the point of demanding more regulation .
Perhaps they fear more regulation over themselves.

[bucket]

Potash Corp can recoup any freight rate.

It costs 150 bucks cdn to get potash into a railcar. They have plenty of room to pay the freight.

Just an example of why freight doesn't matter to other industries....it recoverable. And they get service.