I think there are a couple of elements here.
I think we need more data on how much concentration there is, and also on the behaviour we see from companies in the sector. If we're responsible stewards, then the resource will be there and it will be sustainable for future generations. Canada is second in the world in terms of third party certification of sustainable fisheries management practices by the industry, so I'm not too worried about that.
As I said, we need more data to better inform some of these questions.