There are a variety of implications.
To the point that was made earlier, some institutions would still get at this and would manage their balance sheets in a pretty responsible way. My experience is that if you don't have rigorous regulations, there are always institutions that are less inclined to do that. I'll use the word “shirk”.
The problem isn't the financial system. One bad apple can make things really costly for all of the other good apples. Part of regulation is to make sure that everyone is operating to a specific standard. We do it with mortgage underwriting in a guideline we call B-20. It's a classic example of bringing everyone in the system up to a minimum level. That's a core reason for doing it.
The other reason we should do it is because our institutions are internationally active. They raise money overseas and they use it to make investments here in Canada, whether it's in residential mortgages or business loans. If our institutions aren't seen to be managing this risk intelligently, and one of the criteria is that the regulator's serious about climate risk, then their cost of funding could go up.
We're very sensitive to investor perceptions about the strength and reliability of Canada's financial institutions.