If the population is always increasing then that means the amount of people out fishing are forever increasing. The fishing waters are not getting any bigger to suit, so what do you expect will eventually happen? Less fish and more fishing pressure. Something has to be done right?
The lock outs might help the immediate area but they will put more fishing pressure on the remaining areas so will lead to more lock outs until eventually everything is closed. Inevitable in my eyes, but I wonder, when (if) the stocks or whatever they are trying to preserve recover will the area be reopened?