The answer to that question is a little easier. It is simply because Health Canada and Environment Canada are extremely busy with meeting the legal requirements in the legislation.
Health Canada has limited resources, and we're responding to the immediate requirements. When you're in the new substances program and you have 800 notifications, you have a very specific timeframe within which to respond to those. If you don't in that timeframe, they are, by default, allowed onto the market. Stopping to ask what we should do that's strategic matters less when you're trying to keep your head above water.
I hope that is clear.