Yeah, they've already discontinued their Northern Ontario routes. I have a feeling that we might not see Greyhound operate in Canada for much longer, at this rate.
They probably have a lot more competition now that's probably offering better service. Their website is major pain in the arse to try and book trips because you first have to find the trip which can involve searching different days because it's not smart enough to look around the date you give.
And if you ensure the bus is accessible you have to call their office in Calgary and once you've got the accessibly bus, there's no guarantee the lift will work properly or the driver will know how to operate it (seen this first hand).