Well, if you lease a quota from somebody, you're expected to deliver the fish they attached to it. They pay you their price. It might not be the best price on the market. Normally, as a fisher, you want to get the highest price you can get.
As a fish harvester, you have to diversify into different fisheries. Through that company you usually loan.... You get a quota from elsewhere, also. You're locked into having to fish for them year after year, or you might not get a chance to fish.