I think there are other remedies that would be more palatable. Perhaps making it illegal for ad networks to advertise on stolen content and let Rogers and Bell sue the ad networks that do so. Perhaps requiring Rogers and Bell to sue the pirates directly?

But the solution of turning off parts of the internet by blocking I.P.s which could block large parts of the internet if for example a pirate uses cloud flare is unacceptable.

It’s also problematic that it could end up blocking all kinds of locally hosted content from any number of ISPs using dynamic IPs. Your IP could end up blocked and other ISPs would prohibit video games from connecting to you because someone else used the same I.P. for some type of content piracy earlier.