Historically, Canon and Nikon have dominated the digital camera market. That duopoly changes now, as Sony has sold more cameras than Nikon this year, leapfrogging its competitor into second place.
https://www.notebookcheck.net/Sony-overtakes-Nikon-as-the-second-largest-camera-manufacturer-in-the-world.446057.0.html
1. this is JAPAN ONLY DATA
2. yeah, Sony is leader in "full-full cameras"
If Nikon didn't discontinue the production of some of its APS-C Dslrs, they wouldn't have a sales slump... But now they focus on rich people to buy their stuff.