You know, if you assume that the commercials are going to harvest 20,000 fish (more than they actually did), and that their cost to catch these fish was 30% of the gross, then their income from the fishery would be about:

20,000 *25lbs/fish *$4/lb = $2,000,000/yr. If their costs are 30%, then they net out about $1,400,000

If you assume that there are 20,000 spring salmon fishermen, for $70 per fishermen, per year, we could afford to buy out the commercials.

$70 bucks per season, and you get no nets, and a probably a full season.