Hi Jim,
Cant really tell you about the Canadians, but I can tell you about what goes on down here.
At one time, over 30 railroads entered Houston, now there is ony three, UP, BNSF and TexMex(KCS).
If you read Trains magazine, they had a story on KSC last month, and in that story they talked about the amount of time it takes the TexMex to cross Harris county/Houston and get out of town.
Basin yard, mentioned in the story, is literally right next door to the PTRAs north yard, we have a cross over into Basin, and the TexMex picks up here, on their way.
They cross over, couple into their tracks, then back up through the same crossover into Basin, and double back to their train.
To let you in on how UP treats them, I have seen the TexMex come into our yard, and while they were here, the UP parks a light motor fouling the crossover, and sends the crew to lunch.
Which means the TexMex has to wait till UP moves the motor.
UP has also parked a light motor on the diamond at the west end of Basin, in front of the TexMex, just to slow them up.
Yes, TexMex has trackage rights, but nothing says UP has to expidite them across the sub division, which I can promise you, they dont.
Why?
Because TexMex has something UP wants, and wants bad.
A lot of the Mexican business, both ways.
With railroads, it works like this.
If you cant buy them, or they wont sell it to you at the price you want to pay, then you beat them up till they go away, or give you what you want.
Only problem is TexMex has nowhere else to go, and UP isnt going to help them one bit, instead they will do their best to make it as un profitable as they can for KSC to keep running these train, till KSC either quits, or sells UP the business.
UP has the money, the resources, and most importantly, the time to wait it out.
I am not real sure KCS has any of the above.
As for which, BNSF or UP taking NS or CSX?
I doubt either one reall