There are two main reasons.
In the short term, product should be flooding into Ontario and the Prairies right now, and certainly should have been during that fuel shortage. But there are some restrictions on the ability to get product in, not just because it's landlocked and we can't get the large product ships in, but also because pipelines are totally controlled in this country by refiners, unlike in the United States.
In the longer term, and my second reason—which should really be asked of the refiners—is the economics of building a new refinery. That is a longer-term question. It certainly is an expensive endeavour, without question. I think they have very, very conservative economics, saying that they need to see these huge profits for a long time before they will put that kind of money into the business.