I believe we're in a kind of dilemma over whom governments are supposed to serve. I think these agreements are very useful for certain businesses, including Canadian businesses that are based and invest outside Canada but that would like to disregard domestic regulations. In my view, it's up to states to regulate that, and they should be able to do so in the interest of their citizens.
It seems to me there's a conflict between the interest of certain businesses that want to set up outside Canada and that of the citizens of countries that want to defend themselves and feel it's up to the government to regulate in this area.
In any conflict between a business and a government, there have to be state-to-state negotiations and not this kind of shortcut that businesses can take advantage of. The tribunals are especially established for them, which then enables them to attack states directly. I don't think that's the best possible way to proceed.
In the interest of citizens, it's preferable to proceed in another way, by using justice systems, which incidentally exist in most if not all countries. Sometimes it's felt that they aren't as good as people would like, but the fact remains that this is how you should proceed.