If I were you I'd be careful about implying that whale biologists are unable to retain a critical distance from their study subjects - such an accusation is a serious violation of academic impartiality.
It would be silly for me to claim that they could be unbiased in my opinion, as much as that may be the goal and even their desire. This isn't to say that their research is to be taken with a grain of salt, definitely not, as long as the methodology is not flawed the research is fine.... My point is regarding their opinions, specifically for example any polls of whether marine biologists believe minke whales should be farmed.
Economy vs sense? IDK. Currently, Japan is running at a loss with its whaling operations.
Perhaps they are? I don't really care about such issues. If the government wants whaling to occur even at a loss so be it.
And how would they make any money from that/i.e. be inclined to enter into such a business plan?
As you said they're already at least according to you running at a loss, so perhaps it's not an economic argument, maybe it has something to do with national pride... I don't know, nor do I really care. If whaling were to be economically viable (as at least their nations seem to think it is) then perhaps in order to maintain stocks, as a long-term outlook, it is also economically viable to build such krill fisheries.
Again, with respect, I'm glad your moral stance on the issue is not one informing policy
I'd sympathise with your position much more if I knew you were a bit more of an "eco-nut" (not trying to be too derogatory) who is vegan or at least vegetarian due to the suffering which is caused to many of the animals, regardless of how hard we try... who takes great issue with farmers use of pesticides etc (not sure your position on this) and finds equal moral outrage in these issues.
Perhaps it has to do with the creatures claimed intelligence, but that doesn't square up too logically with me either as my understanding their is just as strong research for the intelligence of many other creatures.