As @Meowmix pointed out, nothing new here since the latest Apple Watch roll out occurred - Rogers, their corporate level chose not to support Apple Watch, and other networks did. Rarely are there exclusivity deals with any of our Canadian carriers, but on a basic level, each carrier makes their decision based upon the bottom line. So the choice lays with those who aren't happy about it, your only option is to switch carriers with all that is involved in that decision.
Plus you can also rant here, and I will always advocate people's right to use it as a place to express this displeasure over a Rogers decision.
But as commented, there has been the occasional statement that someone has heard that Rogers will do it in 2018, but nothing official has ever been put out there. If it does, I am sure it will be advertised. Maybe the Apple 4 watch?