Likely it's because for red wheat the western system was evolved a long time ago, and it's something that just hasn't changed. I believe we've been operating under a very similar model for something like 70 years.
We had a situation in the late eighties in Ontario where the decision had to be made, as they saw that it was a huge uphill battle to try to meet the requirements of KVD. It basically came down to the question, are we going to have an industry or aren't we? The decision was that the costs to impose KVD were too great, so the industry went in a different direction.
I think it's probably time--and again I applaud the government for taking the initiative--to take that step back and ask whether this is still right for western Canada.