There's a reason that very few of our allies do this. It's constitutionally questionable. It's the fact that it creates a pre-emptive collection of data from many millions of Canadians at once on every service that is scoped in.
We don't normally do surveillance of everyone just in case it proves useful. Normally, the process would be that if there's a warranted crime occurring, then perhaps you might start surveillance. That's how the traditional system works, and that would be a more appropriate system.