What has this got to do with my question? Why comment if you aren't contributing to the discussion, and stating what everyone knows! Please - stop replying to so many posts.
Money.
Or better yet - no prison time for ignoring legislation and regulations (oh if only they would put prison time in the regulations!

)
They used to do this well. Less so in recent decades.
CP appears to be better now. But they certainly weren't in the 1970s, as they did their darndest to stop passenger service on their lines.
If VIA (or HFR'R'US or whatever) rely on CPs goodwill to not start being difficult during another half-century, then HFR will be DOA.