Do you realize that if it becomes unprofitable for Jupiters to mine, then it becomes unprofitable for anyone to mine...
This is not outside of the realm of possibility and, frankly, is my greatest concern.
Why would that be a concern?
In such a scenario where difficulty is insane (3 billion for example) then only 2 types of people will continue to mine:
people with zero running costs
people, bold enough to invest (mainly electricity) for a future profit
I can assure you that the percentage of these groups is small, compared to the ones who will just stop mining, even though they paid big bucks for hardware.
So when most of the miners stop mining, then it's not very difficult to predict what will happen - difficulty will decline by a maximum factor of 4 until it becomes sensible to mine again.
But I don't see a scenario where most miners will keep mining when profit is less than running costs
If that was possible then most GPU miners will keep mining and I don't think that is the case 