Yes, I agree with that, but they would be used instead of something else. That is, if an American investor wanted to invest in Canada, knowing that the LLC was the ideal way to make that investment because of its flexibility for U.S. tax and commercial purposes, the problem they ran into under the current Canadian tax law meant that the LLC simply wasn't used. I don't think it meant that the investment wasn't made.
Now that LLCs are there and are recognized as being eligible for treaty benefits, it seems to me they will be used more often. But I don't think you can judge that increased take-up that I'm predicting to reflect a revenue loss.