Could daily intercity passenger rail service be revived across Western Canada?

[milomilo]

I'm sure the demand would be there if a proper rail line between Calgary and Edmonton existed, with an average speed of ~100-150km/h (the faster the better).

But it would cost lots of money to build. Every other city pair in the prairies has a worse business case (other than perhaps some commuter rail), so if there is no political will to build Calgary - Edmonton, there's no point discussing the other routes.