The Japanese need a new denomination for their currency lol. 1,000 yen = 1kyen...
Anyway Sony, like Canon, is a large publicly traded company, and their first priority is shareholder value...so no they aren't going to hold onto a non-profitable business unit. I ran a dual Canon/Sony system for a while but decided to sell off the 5DIII shortly after Sony went through the major re-org that saw the Vaio business unit get shut down. That was around the time the NEX branding was killed off, mirrorless cameras were elevated to the 'alpha' branding, and the imaging products division was tagged as being strategically important business unit that they saw as a growth opportunity. The imaging products division has done quite well financially, so it seems my little bet on Sony paid off.
This got me to wondering what segments Sony has. Interestingly, seems like their largest growth recently is semiconductors. And this figure is in billions (IMO, $36.1 billion is a lot easier to read...even if it's glossing over the smaller percentage remaining 6 million)

Sony's revenue worldwide by segment fiscal years 2012 to 2017
Seems their weakest market now is mobile. Their imaging division has been slowly rebounding from production snags from the Kumamoto earthquakes.
Sony's business stabilizes with strong PS4 game sales
That semi-conductor business is the business unit that develops image sensors. So there's a strategic synergy between the semi-conductor business and the imaging products division. All of the sensor R&D is basically being financed by all the companies sourcing their mobile sensors....what eventually become FF sensor designs, start off as mobile format sensors.


