Referring to FFX-ME comments.
The idea of dedicated via trains are great also. However you're missing the point about why high speed rail to London Kitchener is even being considered. First of all its about rapidly growing this corridor. If the population was going to stay the same. I would agree with everything you said. However we are an hour and half away from a world class city in a country everyone wants to live in and London is the one of cheapest biggest cities in Canada if not #1. KW and London have lots of room to rapidly grow. This will make London more commutable to Toronto. This will be to hard explain to you so I found some articles explaining it also.
Note also I like high-speed rail here but I hate Wynne, and the liberals. I don't think she will make this happen. I think she is lying, and also think she will screw it all up if she does build it. But I will defend why need it. I also think we still need highway linking north London to Kitchener not everyone will take the train.
https://www.thestar.com/opinion/commenta...-rail-will-work-in-southern-ontario.html
http://www.lfpress.com/2016/04/15/via-angling-for-own-track-rails-against-high-speed
These articles help a bit...I just agree with these articles of why we actually need the high speed rail not some of the other stuff they say.