Certainly, I would think that closed, land-based facilities will be better than open systems, for the very reason that it's a penetrable environment and a penetrable cage. Open-net pens are still going to persistently have those problems. They can be reduced, certainly, and that's what we have seen through time.
But ultimately, as long as you have an open system you're still going to have the exchange of water, and with the exchange of water is the exchange of all sorts of potential pathogens and the outfall and effluent. There are issues of trying to minimize those things while you're progressively moving towards another or ultimate solution.
You'll end up weighing the cost and benefits at the end. Is it going to be economical or won't it be economical to have land-based facilities? At the same time, you also have to say that for the current system we want to improve the sustainability of the open-net pen aquaculture that we have.
You base it on those trade-offs, and the industry will see the advantages and the disadvantages of either one.