The key provision is this control in fact, which is unclear because it's a new facet to the Investment Canada Act. What you're hearing is that businesses want predictability and clarity. I think it's fair enough to say there are always surprises in life, but people don't want to be shocked.
Some work to help perhaps this idea of guidance or opinions, non-binding ones, could help flesh out some of this stuff. So those of us who are only smart and not terribly clever could have the benefit of the Minister of Industry's guidance.