They're operating in legal space, for sure. Buying fish from others and freezing it for later use is not illegal. The rules of the game need to change. However

They're operating in legal space, for sure. Buying fish from others and freezing it for later use is not illegal. The rules of the game need to change. However, imposing limits isn't the solution (we have them now, and they're ineffective and practically unenforceable).