I'm not a telecom guy, but is this really a concern?
In 2019 the CRTC forced the big ISPs to allow smaller ISPs to resell their networks.
So you would sign up for internet with "ChrisNet", but the actual cable going into your house is owned by Shaw. "ChrisNet" would pay Shaw to do this.
(2019) CRTC promotes competition for broadband Internet services by setting lower wholesale rates:
(2020) Response by the Government of Canada to petitions concerning CRTC wholesale Internet rates: