Earlier quoted context omitted.
This is a classic Tragedy Of The Commons. Establish ownable fishing rights per ocean areas, and regular greed will solve this problem.
I will happily cover my land in radioactive sludge today [1], in exchange for a one-time payoff that exceeds what I paid for it (Or, worse yet, what I can expect to recoup from it in ). Also, it's not like fish are going to respect lot borders. Overfishing in the lot next to mine will damage my lot's value. The only correct way for me to respond is by overfishing my lot. [1] And leave my neighbours to deal with the l…
You may be disappointed to learn that lucrative radioactive sludge cover opportunities are quite hard to find in today's market.
You're right the fishing right zones need to account for fish migration paths etc.