Yes, we could do so, but at a much higher cost to the economy than is necessary.
That is the fundamental problem with regulations. Regulations, of course, are of different types, but the primary advantage of a carbon price relative to what we often call command-and-control regulations is that you achieve your outcome at a much lower cost to the economy.
I could tell you about our estimates for that, if you like.
You have probably heard of and perhaps spoken with Mark Jaccard, at Simon Fraser University, who advocates the use of smart regulations, which are flexible regulations. What they're trying to do is be as flexible as a carbon price and as low cost as a carbon price, but even he agrees that they can't quite get there.