There are certainly better regulations you can have on the open net cages. You can lower the mortality and the impact on the environment. I don't think you can have an significant effect on that long term.
Of course, while all that is going on you not only have the lice problem; you have the pathogen problem as these things become incubators for viruses and bacteria, which are also starting to negatively impact the marine environment.
As I said, it's a band-aid at best. The industry is already too big. It has to get smaller. You can't regulate it while you have a transition to closed containment. I think that's a realistic proposition. But in terms of having a long-term business as an open net-pen industry, I don't think it's viable.