AFAIK, the Canadian's current four-night schedule is not actually slower than the old three-night schedule because the times used to be "flipped" as in like mornings and evenings.
Since Brian mentioned Greyhound I would like to point out that Greyhound Canada does often carry medical supplies and provides essential transportation to many remote Canadian communities. These services lose money and get direct subsides but Greyhound is obliged to operate them because, in exchange, they get a regulated monopoly on most routes.
If you look at Greyhound Canada's System Timetable, you will find a striking similarity to VIA Rail timetables in that they make many, many tiny flag stops between large cities, and yes, they do carry medical supplies up to Whitehorse and Thompson. Passengers at these flag stops are able to buy tickets directly from the driver at boarding, but with the new anti-overbooking booking system, yeah, it's not going to be easy.
If you're friendly and not arrogant, you can meet people on planes, trains, or buses, it doesn't matter, it depends on you to meet people.
I know the old CP Canadian is dead, but you can still ride a Greyhound along basically the same route:
https://www.flickr.com/photos/hsdjie/sets/72157629167720763.
https://www.flickr.com/photos/hsdjie/sets/72157629230341102/.
And let us not forget the Icefields Parkway which is serviced by Brewster:
https://www.flickr.com/photos/hsdjie/sets/72157629507771115/.
I'm a supporter of VIA Rail too and I don't mean to hijack the thread, but I'm just saying, you know, you don't have to join the 200,000 Greyhound Haters just because you are a VIA Rail fan. And really, I'm being hated and spammed by Greyhound haters right now simply because I voiced a few lines of reason on YouTube. Didn't even go "foaming"! All this hate, not cool! People hate VIA Rail, people hate Amtrak, people hate Greyhound, people hate this hate that, and that's why no mode of transport is doing great right now.