Undoubtedly, the jobs factor is the single biggest attraction to the open net-pen industry (other than the payoffs to the politicians, that is). It is offset somewhat by the reduction in commercial fisheries opportunities - all though the ownership for that reduction is not solely owned by the open net-pen industry - but has been the experience of both New Brunswick, Scotland - and now BC.
There are ways to maximize the pros and minimize the cons of the open net-pen technology - which include robust and scientifically-defensible environmental assessments that take into account things such as disease transfer risk, and ecological footprints.
That has to be forced onto the industry - like any other industrial proponent application - and the regulators cannot be the promoters, neither.
If the Province decides not to renew the foreshore application - that's it.
The industry is running out of options wrt clean water. I doubt if China is a viable alternative as some have suggested. More likely Chile - which has also struggled with things like disease outbreaks - but does not have wild salmon - except those which have escaped the net-pen industry.
In any event, with or without the open net-cage industry in it's current form and intensity - we will all survive - as will the communities on the coast.
First Nations have been here on the West Coast for 14,000+ yrs - they are not going anywhere, either.