I'll answer briefly, then.
Certainly, having your own right of way facilitates travel. It reduces travel time because you don't encounter large freight trains. The rails that are owned by CN or CP have a radio centre that's owned by those freight companies, so they are managing their own traffic.
We want passengers to come first, and that's what clients expect in their modes of travel. Whether it's by car, plane or other modes, they expect that people come before goods. That can only really happen with dedicated right of way. There are good examples of that, even in Florida with the travel times on the Brightline between Orlando and Miami.
Really, having a dedicated right of way is quite helpful.