Oh, maybe BDUs found common ground in english-canada, but vertical integration is a burden over here.
Quebecor owns Vidéotron, which owns TVA network. TVA on demand is exclusive to Videotron customers, but Videotron doesn't cover the whole province. There are Cogeco areas, Cablevision areas, cooperatives areas, and the Bell and Telus IPTV services.
As for Vidéotron's own Video on Demand service, CTV, Global and City on Demand simply don't exist. At all.
It took years, even after Radio-Canada launched Tou.tv service to add Radio-Canada sur Demande. Being the major french-language service provider, they signed a deal with Astral and other french-language providers so that if you subscribe to one of their specialty but not the other (example, Ztélé but not Historia), then you can only access the channel's on-demand content you're subscribed to. Unlike Space or Showcase, there are no full-lenght episodes on their respective websites (except webseries), content is username/password access restricted.
I don't see any benefit to vertical integration that you are praising here.