There are rules about undue preference and blocking. The CRTC has reviewed a number of cases and made determinations.
Net neutrality advocates like to point to the TELUS blocking of a website as a reason why we need new net neutrality laws. I disagree. No new regulations are needed. The existing rules prohibit that kind of blocking already.
It is like saying that we need new speeding laws because some people drive 140 kmph on the highway.
Do we need new laws, new policies, new regulations when there are already plenty on the books?