You knowing nothing about fishing is a perfect example. Would it be a good idea for you to set policy about fishing? No, there is too much nuance and complexity in managing existing sea life. Some fishing is good for a healthy ecosystem, too much fishing is bad. To manage the shared resource of the sea requires the input of fishing folks, conservationists, environmentalists, and anyone else with an interest. No one group or even small coalition should be allowed to control any aspect of commercial fishing. It must be decided collectively or not at all.

By force I mean anything that would compel action from someone with a threat of consequences. Changing the incentives is not force because you're not imposing consequences, just making the prospect less appealing.