There are two parts to the fishing thing. From a pure economic perspective, fishing is insignificant. But within living memory obtaining food was a national security issue for the UK (during world war II). In a world in which states look not to grow their economy, but to harm others - and guess what, that's where we just arrived - not all industries can be considered purely on their revenue. Man cannot live on warhammer alone.
We need to distinguish between paying over the odds to keep industries which are essential to have in an antagonistic scenario, from loss-aversion and nostalgia for industries which don't provide as much employment as they used to.
We need to distinguish between paying over the odds to keep industries which are essential to have in an antagonistic scenario, from loss-aversion and nostalgia for industries which don't provide as much employment as they used to.