If you look at Nikon's financial history, you'll find many years where Precision made losses and Imaging paid the bills. It's not very likely that they would end either division.
Many people seem to believe that companies operate in some wild west idea of a pure capitalism where all that matters is money. It is not quite like that. Many people do work because it makes them feel a sense of accomplishment and pride. Not because there is a lot of money in it.
People always predict doom for Nikon, it gets very tiring.
What is also tiring is selective use of data. In 2012 Nikon sold a lot because in 2011 their factories in Sendai and Thailand were destroyed, so they could not sell what they could not make. In 2012 they had a lot of pent-up demand and their factories were up and running again and so they sold a lot, also those cameras they could not supply to customers who would have normally bought in 2011. While also other manufacturers had damage, I believe Nikon were among the worst affected. 40% is certainly not Nikon's typical market share historically.
Olympus, by contrast, made many years of losses from cameras. Nikon imaging has been profitable on most years in the past decade. This year, probably no camera maker is going to do well due to COVID-19 cancelling travel, events, and incomes.