I agree with that, Kevin.
In terms of the evidence, there aren't a lot of academic studies out there. A number of these regimes are relatively new, but as Kevin says, they're out there. They're certainly providing competition for Canada.
Anecdotally, there's evidence out there that's supportive of it. There are particular companies that have come out and given evidence; they've made statements around the fact that they've either stayed in that particular country or moved and carried out more operations in a particular country that had a patent box. I would say the academic evidence isn't there yet in terms of the resulting benefits to the GDP, but anecdotally there is evidence that these are working in other jurisdictions.